Question

The length of a rectangle is twice its breath. If its perimeter is 30m, then find its length and breadth.

Answer 1

Perimeter of the rectangle = 2(l+b)

Here, l = 2b

Also,

2(l+b) = 30

l + b = 15

2b + b =15

3b = 15

b = 5 m

therefore, l = 2*5 = 10 m