{"id":1306,"date":"2023-03-06T09:00:39","date_gmt":"2023-03-06T03:30:39","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=1306"},"modified":"2023-03-06T09:56:57","modified_gmt":"2023-03-06T04:26:57","slug":"perimeter-of-a-circle","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/perimeter-of-a-circle\/","title":{"rendered":"How To Calculate The Perimeter Of A Circle"},"content":{"rendered":"<h2><strong>Perimeter Of A Circle<\/strong><\/h2>\n<h3>Circumference of a Circle<\/h3>\n<p>Circumference means, \u2018the perimeter of a circle\u2019. The word has been derived from the Latin word circumferre means to carry around.<br \/>\nThe distance around a circular region is also known as its circumference.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131425\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-1.jpeg\" alt=\"How To Calculate The Perimeter Of A Circle 1\" width=\"869\" height=\"428\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-1.jpeg 869w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-1-300x148.jpeg 300w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-1-768x378.jpeg 768w\" sizes=\"(max-width: 869px) 100vw, 869px\" \/><br \/>\n<strong>Note:<\/strong><\/p>\n<ol>\n<li>The ratio of circumference to diameter is approximately the same around 3.142.<br \/>\ni.e. The circumference of a circle is slightly more than 3 times its diameter.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131428\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-2.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 2\" width=\"382\" height=\"65\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-2.jpg 382w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-2-300x51.jpg 300w\" sizes=\"(max-width: 382px) 100vw, 382px\" \/><br \/>\nThus, we haveThe constant ratio of circumference to diameter, i.e., 3.142 is denoted by Greek letter \u03c0, read as pi (\u03c0).<\/li>\n<li>For calculation purposes, the value of \\(\\frac { 22 }{ 7 }\\) is taken as or 3.14 approx.<br \/>\n\u2234 C = \u03c0 \u00d7 d \u21d2 C = \u03c0 \u00d7 2r<br \/>\n\u21d2 C = 2\u03c0r, where r is the radius of the circle.<br \/>\ni.e., Circumference of the Circle = 2 \u00d7 radius of the circle \u00d7 \u03c0<br \/>\nor Circumference of the Circle = diameter of the circle \u00d7 \u03c0<\/li>\n<li>Circumference of a semi-circle = \\(\\frac { 2\\pi r }{ 2 }\\) = \u03c0r and the perimeter of a semi-circular shape = (\u03c0 + 2) r units.<\/li>\n<\/ol>\n<h3><strong>Perimeter Of A Circle With Examples<\/strong><\/h3>\n<p><strong>Example 1:\u00a0<\/strong>If the perimeter of a semi-circular protractor is 66 cm, find the diameter of the protractor (Take \u03c0 = 22\/7).<br \/>\n<strong>Solution: <\/strong>Let the radius of the protractor be r cm. Then,<br \/>\nPerimeter = 66 cm<br \/>\n\u21d2 1\/2(2 \u03c0r) = 66 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \\(\\left[ \\text{Perimeter}\\text{of}\\text{semi-circle}\\text{=}\\frac{\\text{1}}{\\text{2}}\\text{(2 }\\!\\!\\pi\\!\\!\\text{ r)} \\right]\\)<br \/>\n\u21d2 \u03c0r = 66<br \/>\n\u21d2 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 r = 66<br \/>\n\u21d2 r = 21 cm<br \/>\n\u2234 Diameter of the protractor = 2r = (2 \u00d7 21) cm<br \/>\n= 42 cm<\/p>\n<p><strong>Read More:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.aplustopper.com\/parts-of-the-circle\/\"><span style=\"font-weight: 400;\">Parts of a Circle<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/common-chord-two-intersecting-circles\/\"><span style=\"font-weight: 400;\">Common Chord of Two Intersecting Circles<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/construction-of-a-circle\/\"><span style=\"font-weight: 400;\">Construction of a Circle<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/area-of-a-circle\/\"><span style=\"font-weight: 400;\">The Area of A Circle<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/properties-of-circles\/\"><span style=\"font-weight: 400;\">Properties of Circles<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/sector-of-a-circle\/\"><span style=\"font-weight: 400;\">Sector of A Circle<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/area-of-a-segment-of-a-circle\/\"><span style=\"font-weight: 400;\">The Area of A Segment of A Circle<\/span><\/a><\/li>\n<li><a href=\"https:\/\/www.aplustopper.com\/area-of-a-sector-of-a-circle\/\"><span style=\"font-weight: 400;\">The Area of A Sector of A Circle<\/span><\/a><\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" title=\"Understanding the Circumference of a Circle Formula\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/riNAA-jx0u8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<p><strong>Example 2: <\/strong>The circumference of a circle exceeds the diameter by 16.8 cm. Find the radius of the circle.<br \/>\n<strong>Solution: <\/strong>Let the radius of the circle be r cm. Then,<br \/>\nDiameter = 2r cm and Circumference = 2\u03c0r cm<br \/>\nIt is given that the circumference exceeds the diameter by 16.8 cm<br \/>\n\u2234 Circumference = Diameter + 16.8<br \/>\n\u21d2 2\u03c0r = 2r + 16.8<br \/>\n\u21d2 2 \u00d7 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 r = 2r + 16.8<br \/>\n\u21d2 44r = 14r + 16.8 \u00d7 7<br \/>\n\u21d2 44r \u2013 14r = 117.6 \u21d230 r = 117.6<br \/>\n\u21d2 r =\u00a0\\(\\frac { 117.6 }{ 30 }\\) = 3.92<br \/>\nHence, radius = 3.92 cm<\/p>\n<p><iframe loading=\"lazy\" title=\"Circumference of a Circle | MathHelp.com\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/39OHW0nYfN0?start=2&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<p><strong>Example 3:\u00a0<\/strong>A wire is looped in the form of a circle of radius 28 cm. It is re-bent into a square form. Determine the length of the side of the square.<br \/>\n<strong>Solution: <\/strong>We have,<br \/>\nLength of the wire = Circumference of the circle<br \/>\nLength of the wire \u00a0= 2 \u00d7 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 28 \u00a0cm\u00a0 \u00a0 \u00a0 \u00a0[Using C = 2\u03c0r]<br \/>\nLength of the wire = 176 cm \u00a0 \u00a0 \u00a0 \u00a0 \u00a0&#8230;.(i)<br \/>\nLet the side of the square be x cm. Then,<br \/>\nPerimeter of the square = Length of the wire<br \/>\n\u21d2 4x = 176 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[Using (i)]<br \/>\n\u21d2 x = 44 cm<br \/>\nHence, the length of the sides of the square is 44 cm.<\/p>\n<p><strong>Example 4: <\/strong>A race track is in the form of a ring whose inner circumference is 352 m, and the outer circumference is 396 m. Find the width of the track.<br \/>\n<strong>Solution: <\/strong> Let the outer and inner radii of the ring be R metres and r metres respectively. Then,<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131456 aligncenter\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-3.png\" alt=\"How To Calculate The Perimeter Of A Circle 3\" width=\"215\" height=\"193\" \/>2\u03c0R = 396 and 2\u03c0r = 352<br \/>\n\u21d2 2 \u00d7 \\(\\frac { 22 }{ 7 }\\) \u00d7 R = 396 and 2 \u00d7 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 r = 352<br \/>\n\u21d2 R = 396 \u00d7 \\(\\frac { 7 }{ 22 }\\) \u00d7 \\(\\frac { 1 }{ 2 }\\) and r = 352 \u00d7 \\(\\frac { 7 }{ 22 }\\)\u00a0\u00d7\u00a0\\(\\frac { 1 }{ 2 }\\)<br \/>\n\u21d2 R = 63 m and r = 56 m<br \/>\nHence, width of the track = (R \u2013 r) metres<br \/>\n= (63 \u2013 56) metres = 7 metres<\/p>\n<p><strong>Example 5: <\/strong>The inner circumference of a circular track is 220 m. The track is 7m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of j\u00a0\u2013 2 per metre. (Use \u03c0 = 22\/7)<br \/>\n<strong>Solution: <\/strong>Let the inner and outer radii of the circular track be r metres and R metres respectively. Then,<br \/>\nInner circumference = 220 metres<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131483 aligncenter\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-4.png\" alt=\"How To Calculate The Perimeter Of A Circle 4\" width=\"220\" height=\"188\" \/>\u21d2 2\u03c0r = 220 \u21d2 2 \u00d7 \\(\\frac { 22 }{ 7 }\\) \u00d7 r = 220 \u21d2 r = 35 m<br \/>\nSince the track is 7 metre wide everywhere. Therefore,<br \/>\nR = Outer radius = r + 7 = (35 + 7) m = 42 m<br \/>\n\u2234 Outer circumference<br \/>\n= 2\u03c0R = 2 \u00d7 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 42 m = 264 m<br \/>\nRate of fencing = j\u00a0\u2013 2 per metre<br \/>\n\u2234 Total cost of fencing<br \/>\n= (Circumference \u00d7 Rate) =\u00a0j\u00a0\u2013 (264 \u00d7 2) = j\u00a0\u2013\u00a0528<\/p>\n<p><strong>Example 6: <\/strong>A bicycle whell makes 5000 revolutions in moving 11 km. Find the diameter of the wheel.<br \/>\n<strong>Solution: <\/strong>Let the radius of the wheel be r cm.<br \/>\nDistance covered by the wheel in one revolution \u00a0\\(=\\frac{\\text{Distance}\\,\\,\\text{moved}}{\\text{Number}\\,\\,\\text{of}\\,\\,\\text{revolutions}}\\text{ = }\\frac{\\text{11}}{\\text{5000}}\\text{km}\\)<br \/>\n= \\(\\frac { 11 }{ 5000 }\\) \u00d7 1000 \u00d7 100 cm = 220 cm<br \/>\n\u2234 Circumference of the wheel = 220 cm<br \/>\n\u21d2 2\u03c0r = 220 cm \u21d2 2 \u00d7 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 r = 220<br \/>\n\u21d2 r = 35 cm<br \/>\n\u2234 Diameter = 2r cm = (2\u00d7 35) cm = 70 cm<br \/>\nHence, the diameter of the wheel is 70 cm.<\/p>\n<p><strong>Example 7: <\/strong>A car has wheels which are 80 cm in diameter. How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour ?<br \/>\n<strong>Solution: <\/strong>We have,<br \/>\nSpeed of the car = 66 km\/hr<br \/>\n\u2234 Distance travelled by the car in 1 hour = 66 km<br \/>\n\u21d2 Distance travelled by the car in 10 min.<br \/>\n= \\(\\frac { 66 }{ 60 }\\) \u00d7 10 km = 11 km = 11 \u00d7 1000 \u00d7 100 cm<br \/>\nWe have,<br \/>\nRadius of car wheels = 40 cm<br \/>\n\u2234 Circumference of the wheels<br \/>\n= 2 \u00d7 \\(\\frac { 22 }{ 7 }\\) \u00d7 40 cm<br \/>\n\u21d2 Distance travelled by the car when its wheels take one complete revolution<br \/>\n= 2 \u00d7 \\(\\frac { 22 }{ 7 }\\) \u00d7 40 cm<br \/>\n\u2234 Number of revolutions made by the wheels in 10 minutes<br \/>\n\\( =\\frac{\\text{Distance}\\,\\,\\text{covered}\\,\\,\\text{by}\\,\\,\\text{the}\\,\\,\\text{car}\\,\\,\\text{in}\\,\\,\\text{10}\\,\\,\\text{minutes}}{\\ \\ \\text{Distance}\\,\\,\\,\\text{covered}\\,\\,\\text{by}\\,\\,\\text{the}\\,\\,\\text{car}\\ \\text{when}\\ \\text{its}\\,\\,\\text{wheels}\\ \\text{make}\\,\\,\\text{one}\\,\\,\\text{complete}\\,\\,\\text{revolution}} \\)<br \/>\n\\( =\\frac{11\\times 100\\times 100}{2\\times \\frac{22}{7}\\times 40}=\\frac{11\\times 1000\\times 100\\times 7}{2\\times 22\\times 40}=4375 \\)<br \/>\nHence, each wheel makes 4375 revolutions in 10 minutes.<\/p>\n<p><strong>Example 8: <\/strong>A circular flower bed has a diameter of 1.5 m. A metal edging is to be placed around it. Find the length of edging needed and the cost of the edging if it is sold by the metre and costs 60 a metre. (You can only buy a whole number of metres) <strong>\u00a0\u00a0 <\/strong><br \/>\n<strong>Solution: <\/strong><br \/>\nFirst find the circumference of the circle, how many metres you need.<br \/>\n\u2234 C = p \u00d7 d = 3.14 \u00d7 1.5 = 4.71 m.<br \/>\nAs the required length is 4.71 m, therefore we have to buy 5 m of edging.<br \/>\nSo, the cost for buying 5 m = 5 \u00d7 60 = 300.<\/p>\n<p><strong>Example 9: <\/strong>There is a circular pond and a footpath runs along its boundary. A man walks around it, exactly once, keeping close to the edge. If his step is 66 cm long and he takes exactly 400 steps to go around the pond. What is the diameter of the pond ?<br \/>\n<strong><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131484 aligncenter\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-5.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 5\" width=\"210\" height=\"186\" \/>Solution: <\/strong><br \/>\nWe know that perimeter of the circle = \u03c0d<br \/>\nLength of one step of man = 66 cm<br \/>\nLength of 400 steps of man = 400 \u00d7 66 cm = 26400 cm<br \/>\nThis means circumference of the pond is 26400 cm<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131485\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-6.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 6\" width=\"350\" height=\"171\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-6.jpg 350w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-6-300x147.jpg 300w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/><\/p>\n<p><strong>Example 10: <\/strong> A circular table cloth has a circumference of 220 cm.<br \/>\n(a) Is the cloth large enough to fit on a round table which is 50 cm in diameter ?<br \/>\n(b) If so, what length of the table cloth would hang down on each side ?<br \/>\n<strong><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131486 aligncenter\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-7.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 7\" width=\"239\" height=\"302\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-7.jpg 239w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-7-237x300.jpg 237w\" sizes=\"(max-width: 239px) 100vw, 239px\" \/>Solution:<\/strong><br \/>\n(a) The diameter of the table is 50 cm.<br \/>\nTherefore, circumference of the table<br \/>\n= \u03c0 \u00d7 d = \u03c0 \u00d7 50 cm \u00a0\u2026\u2026(i)<br \/>\nand circumference of cloth = 220 cm<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131487\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-8.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 8\" width=\"344\" height=\"125\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-8.jpg 344w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-8-300x109.jpg 300w\" sizes=\"(max-width: 344px) 100vw, 344px\" \/><br \/>\n\u2234 Circumference of cloth = 220 cm<br \/>\n= 2 \u00d7 \u03c0 \u00d7 35 or 70\u03c0 \u00a0\u2026..(ii)<br \/>\nClearly from (i) and (ii), we have<br \/>\nThe cloth is large enough to fit on a round table.<br \/>\n(b)<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131488\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-9.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 9\" width=\"490\" height=\"124\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-9.jpg 490w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-9-300x76.jpg 300w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><br \/>\n\u2234 Hanging length = 35 cm \u2013 25 cm = 10 cm<br \/>\nClearly, radius of cloth is much longer than the radius of table.<br \/>\nTherefore, the cloth will hang down 10 cm on each side.<\/p>\n<p><strong>Example 11: <\/strong> Some cotton thread is wound on a reel with a radius of 35 cm.<br \/>\n(a) What length of cotton round on one turn of the reel?<br \/>\n(b) How many turns of the reel are needed to wind 44 m of cotton on the reel?<br \/>\n<strong><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-131489 aligncenter\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2017\/06\/How-To-Calculate-The-Perimeter-Of-A-Circle-10.jpg\" alt=\"How To Calculate The Perimeter Of A Circle 10\" width=\"165\" height=\"189\" \/>Solution:<\/strong><br \/>\n(a) Clearly, to calculate the length of cotton fits round on one turn of the reel, we have to calculate the circumference of reel.<br \/>\nNow, circumference of reel = 2\u03c0r, where r is the radius of the reel.<br \/>\n= 2 \u00d7 \\(\\frac { 22 }{ 7 }\\)\u00a0\u00d7 35 cm = 220 cm<br \/>\nThus, 220 cm is the required length of cotton round on one turn of the reel.<br \/>\n(b) Since, we know 1 m = 100 cm<br \/>\n\u2234 44 m = 4400 cm<br \/>\n\u2234 220 cm is the required length to complete one turn.<br \/>\nNow, the number of turns to complete 1 cm length = \\(\\frac { 1 }{ 220 }\\) turns<br \/>\nSo, the required number of turns to complete the length 4400 cm<br \/>\n= 4400 \u00d7 \\(\\frac { 1 }{ 220 }\\)\u00a0turns = 20 turns.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Perimeter Of A Circle Circumference of a Circle Circumference means, \u2018the perimeter of a circle\u2019. The word has been derived from the Latin word circumferre means to carry around. The distance around a circular region is also known as its circumference. Note: The ratio of circumference to diameter is approximately the same around 3.142. i.e. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[5],"tags":[278,2617,280,281],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.8 (Yoast SEO v17.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How To Calculate The Perimeter Of A Circle - A Plus Topper<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.aplustopper.com\/perimeter-of-a-circle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How To Calculate The Perimeter Of A Circle\" \/>\n<meta property=\"og:description\" content=\"Perimeter Of A Circle Circumference of a Circle Circumference means, \u2018the perimeter of a circle\u2019. The word has been derived from the Latin word circumferre means to carry around. The distance around a circular region is also known as its circumference. 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