Question

How long can the run be made?

Answer 1

`L=15\ m`

Explanation:

we know that

The perimeter of rectangle is equal to

`P=2L+2W`

In this problem we have

`P=42\ m`

`W=6\ m`

substitute in the formula and solve for L

`42=2L+2(6)`

simplify

`21=L+(6)`

`L=21-6=15\ m`