Question

A rectangular athletic field is twice as long as its wide.

If the perimeter of the athletic field is $180$ yards, what are the dimensions?

Answer 1

Rectangle:

The opposite sides are parallel and equal.

Given

Length $\left(L\right)=2x$ Width (W)

Perimeter $\left(P\right)=180yards$

How to calculate the dimensions?

$\begin{array}{rcl}\text{Perimeter}& =& 2\left(l\text{ength+width}\right)\\ 180& =& 2\left[\left(2W\right)+W\right]\\ 180& =& 2\left(3W\right)\\ 180& =& 6W\\ W& =& 30\end{array}$

Then Length $=2W=2x30=60$

Hence, the dimension of rectangle is $30x60.$