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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