Question

4. Find the width of a rectangle with a perimeter of 90 and a length of 15. Draw and label the

rectangle first to set up your problem.
90
15
45
30

Answer 1

The width of the rectangle is 30 units

Explanation:

we know that

The perimeter of a rectangle is

`P=2(L+W)`

where

L is the length

W is the width

we have

`P=90\ units`

`L=15\ units`

The draw in the attached figure

substitute the given values in the formula of perimeter and solve for W

`90=2(15+W)`

`45=(15+W)`

`W=45-15`

`W=30\ units`

therefore

The width of the rectangle is 30 units