Question

A rectangular vegetable garden has a perimeter of 76 ft. The length of the garden is 20 ft. What is the width of the garden?

Answer 1

The formula of the perimeter of a rectangle is

$P=2l+2w$

where l and w are the length and width of the rectangle, respectively.

In our case,

$A=76,l=20$

Thus,

$\begin{gathered} \Rightarrow76=2w+2(20) \\ \Rightarrow76-40=2w \\ \Rightarrow w=\frac{36}{2}=18 \\ \Rightarrow w=18 \end{gathered}$

The width of the garden is 18ft