This type of problem involves relationships between the length
and width and/or connections between the length, width, and diagonal of a rectangle. With information about the area
or perimeter, we can set up equations that allow us to find the rectangle's length
and width. Once these are known, we can use the formulas for area
Sometimes there is a need to use the Pythagorean Theorem
to relate the length, width, and diagonal. It is important to take note of the fact that the diagonal is always the hypotenuse
of this right triangle.