Perimeter & Area Word Problems: Part II 5-82
Transition from finding 1 side of a rectangle to finding 2 sides. If the long side of a rectangle is twice the short side and its perimeter is 72, what's its area? If the short side is 1u, the long side is 2u, and the perimeter is 2 x (1u+2u) = 6u = 72. Since 1u = 12, the short side is 12, the long side is 24, and the area is 12 x 24 = 288.
