Question

Find the perimeter of a rectangle whose length is 21 feet and whose width is 15​

Answer 1

2*(l+b)

So,

2*(21+15)

2*36

=72

Answer 2

Perimeter of rectangle is 72 feet.

Explanation:

We need to find the perimeter of rectangle where

Length = 21 feet

Width = 15 feet are given.

The formula used will be: Perimeter of rectangle = 2(Length + Width)

So, Perimeter of rectangle is:

Perimeter of rectangle = 2(Length + Width)

= 2 ( 21+15)

= 2(36)

= 72 feet.

So, perimeter of rectangle is 72 feet.