Question

The perimeter of the window of the camper shell is 130 in. Find the length of one of the shorter sides of the window.

Answer 1

You can't deduce the length of a side from the perimeters of a rectangle.

Say that $s$ and $S$ are, respectively, the short and long side of the rectangle.

So, we know that

$2s+2S=130 \iff 2(s+S)=130 \iff s+S=65$

But we can't solve exactly for $s$ nor for $S$, unless more information is given.