Question

If the width of a rectangle is 2.45 inches and the perimeter of the rectangle is 10.8 inches, what is the length of the rectangle?

Answer 1

We have a rectangle with a width W and a length L.

We can write the perimeter as:

$P=2(W+L)$

If we know that W=2.45 and P=10.8, we can calculate the length L as:

$\begin{gathered} P=2(W+L) \\ 10.8=2(2.45+L) \\ \frac{10.8}{2}=2.45+L \\ 5.4=2.45+L \\ L=5.4-2.45 \\ L=2.95 \end{gathered}$

The length of the rectangle is 2.95.