Question

The area of a rectangle is 72 cm² and length is 9 cm. Find its perimeter.

Answer 1

Given: Area = 72 cm² and Length = 9 cm.

Step-wise calculation:

1. Let width = w cm.

2. Area = length × width

⇒ 9 × w = 72

3. Solve for w:

= 72 ÷ 9

= 8 cm

4. Perimeter P = 2 × (length + width)

= 2 × (9 + 8)

= 2 × 17

= 34 cm

The perimeter of the rectangle is 34 cm.