## How to find the Areas of an Isosceles Triangle and an Equilateral Triangle?

### Area of a triangle

You can also use Equilatoral Triangle Calculator to find the area and perimeter.

### Area of a right triangle

### Area of an equilateral triangle

### Area of isosceles triangle

### Areas of an Isosceles Triangle and an Equilateral Triangle Problems with Solutions

**1. Find the area of the following triangles :**

**Solution:**

(i) Base = 6 cm and height = 5 cm.

∴ Area of the triangle = ½ × base × height

= ½ × 6 cm × 5 cm = 3 cm × 5 cm

= 15 sq cm.

(ii) Base = 3.2 cm and height = 2 cm.

Therefore, area = ½ × base × height

= ½ × 3.2 × 2 = 3.2 cm × 1 cm = 3.2 sq cm

(iii) Base = 6 cm and height = 7.4 cm.

Therefore, area = ½ × base × height

= ½ × 6 cm × 7.4 cm = 3 cm × 7.4 cm

= 22.2 sq cm.

(iv) Base = 10 cm and height = 7.5 cm.

∴ Area of the triangle = ½ × base × height

= ½ × 10 cm × 7.5 cm = 5 cm × 7.5 cm

= 37.5 sq cm.

**2. Find the height of a triangle whose base is 60 cm in figure and whose area is 600 sq cm.**

**Solution:**