Question

Rectangle A and B have the same Area. Rectangle A has a length of 7m and a width of 4m. Rectangle B has a width of 10m. What is the perimeter of Rectangle B? *

Answer 1

P = 25.6 feet

Explanation:

Given that,

Rectangle A and B have the same Area.

The area of a rectangle is given by :

A = lb

`l_Ab_A=l_Bb_B`

We have,

`l_A=7\ m, b_A=4\ m, b_B=10\ m`

So,

`l_B=(l_Ab_A)/(l_B)\\\\l_B=(7* 4)/(10)\\\\l_B=2.8\ m`

The perimeter of rectangle B,

`P=2(l_B+b_B)\\\\=2(2.8+10)\\\\=25.6\ ft`

So, the perimeter of rectangle B is equal to 25.6 feet.