Question

The area of a rectangle is 229.2 m2. If the length is 15 m, what is the perimeter of the rectangle

Answer 1

`\large\boxed{P=60.56\ m}`

Explanation:

The formula of an area of a rectangle:

`A=lw`

l - length

w - width

We have

`A=229.2\ m^2\\\l=15\ m`

Substitute:

`15w=229.2` divide both sides by 15

`w=15.28\ m`

The formula of a perimeter of a rectangle:

`P=2(l+w)`

Substitute:

`P=2(15+15.28)=2(30.28)=60.56\ m`