Question

A dance floor is in the shape of a rectangle.

It is 21 meters long and 16 meters wide.
What is its perimeter?

Answer 1

P= 74

Explanation:

For a rectangle with width w and length L, the perimeter P is defined as P=2W+2L

W=16

L=21

P= 2 x 16 + 2 x 21 =

P=74

Answer 2

The perimeter is 74 meters

Explanation:

By definition the perimeter of a rectangle is the sum of the lengths of its 4 sides.

The formula for calculating the perimeter of a rectangle is as follows:

`P = 2w + 2L`

Where P is the perimeter, w is the width and L is the length.

In this case we want to find P and we know that:

`w =16\ meters`

`L =21\ meters`

Therefore:

`P = 2(16) + 2(21)`

`P = 74\ m`