Question

The perimeter of a rectangle is 36 inches. If the width of the rectangle is 6 inches, what is the length?

Answer 1

P=36in, W=6in.

The width of the rectangle is 6 for one side and 12 total for both. So 36-12 is 24. That means the length total has to be 24 and that would be 12.

So the answer is D.12 inches.

Answer 2

$P=2(w+l)$
P - perimeter
w - width
l - length

$P=36 \ in \\ w=6 \ in \\ \\ 36=2(6+l) \\ 36=12+2l \\ 36-12=2l \\ 24=2l \\ l=\frac{24}{2} \\ l=12$

The answer is D. 12 inches.