Quantity A

The perimeter of a square with a diagonal of 12 inches.

Quantity B

The perimeter of a rectangle with a diagonal of 10 inches and longer sides that are three times the length of its shorter sides.

A rectangle with an area of 64 square units is one-fourth as wide as it is long. What is the perimeter of the rectangle?

A rectangle has a length that is twice that of its height. If the perimeter of that rectangle is , what is its area?