Selina Concise Mathematics Class 9 ICSE Solutions Area and Perimeter of Plane Figures
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APlusTopper.com provides step by step solutions for Selina Concise Mathematics Class 9 ICSE Solutions Chapter 20 Area and Perimeter of Plane Figures. You can download the Selina Concise Mathematics ICSE Solutions for Class 9 with Free PDF download option. Selina Publishers Concise Mathematics for Class 9 ICSE Solutions all questions are solved and explained by expert mathematic teachers as per ICSE board guidelines.
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Selina ICSE Solutions for Class 9 Maths Chapter 20 Area and Perimeter of Plane Figures
Exercise 20(A)
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Since the perimeter of the isosceles triangle is 36cm and base is 16cm.
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Exercise 20(B)
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We need to find the cost of carpeting of 80 cm = 0.8 m wide carpet, if the rate of carpeting is Rs. 25. Per metre.
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In the given figure, we can observe that the non-parallel sides are equal and hence it is an isosceles trapezium.
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Exercise 20(C)
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From the given data, we can calculate the area of the outer circle and then the area of inner circle and hence the width of the shaded portion.
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