Finding the area of a rectangle is an important ability that allows you to do things from completing geometry homework to planning home improvement projects. The area of a rectangle is the amount of space that a rectangle covers. You can find the area of a rectangle using a simple algebraic expression in which "L" x "W" = "X," with X as your variable, or answer.
Measure the length of your rectangle. Use this measurement as L.
Measure the width of your rectangle. This measurement is W.
Set up your algebraic expression: L times W = X, or the area.
Solve your equation by multiplying L times W to find the area.
Use a calculator as necessary.