Maths-

General

Easy

Question

# If Area of a rectangle is 400 and length is 20, find its perimeter.

- 100cm
- 40cm
- 60cm
- 80 cm

## The correct answer is: 80 cm

### Area of rectangle = L * B

400 = 20 *B

400/20 = B

20 = B

Perimeter of rectangle = 2*(L+B)

=2 * (20 +20)

=2 * 40

=80 cm

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