The perimeter of a rectangle of width 6 feet is 10 yards. In square feet, what is the area of the rectangle?
10 yards = 30 ft
So....
2(W + L) = Perimeter
2(6 + L) = 30 divide both sides by 2
6 + L = 15 subtract 6 from both sides
L = 9
And Area = W * L = 6 * 9 = 54 square feet