Question

The perimeter of a rectangular pool is 72 meters. If the length of the pool is twice its breadth. Its length is_________.

Answer 1

Length = 18 meters

Explanation:

Let the length of the rectangular pool = l meters

And breadth of the pool = w meters

Perimeter of the rectangular pool = 2(l + 2w)

Since, perimeter of the rectangular pool is 72 meters.

2(l + 2w) = 72

l + 2w = 36 --------(1)

If length of the pool is twice of its breadth,

l = 2w

w =
`(l)/(2)` -------(2)

By substituting the value of 'w' from equation (2) to equation (1),

`l+2*{(l)/(2)}=36`

2l = 36

l = 18 meters