Question

The perimeter of the rectangle is 20 cm. If the length of the rectangle is 6 cm, then find the breadth of the rectangle.

• A. 4 cm
• B. 6 cm
• C. 10 cm
• D. 14 cm

Answer 1

The correct option is A 4 cm

Perimeter of a rectangle = (2 $\times$ length) + ( 2 $\times$ breadth) = 20 cm

Length of the rectangle = 6 cm

Perimeter of the rectangle = (2 $\times$ 6) + ( 2 $\times$breadth) = 20 cm

⇒ 12 + ( 2 $\times$ breadth) = 20

Subtracting 12 from both sides,

⇒ 2 $\times$ breadth = 8

Dividing both sides by 2

⇒ breadth = 4 cm

Hence ‘option a’ is correct.