## Basic College Mathematics (10th Edition)

a) 5 ft x 1 ft = 5ft$^{2}$ 4 ft x 2 ft = 8ft$^{2}$ 3 ft x 3 ft = 9 ft$^{2}$ b) 3 ft x 3 ft has the greatest area.
Area of a rectangle: $A$ = $l$$w Area of a square: A = s$$^{2}$ $A$ = $l$$w A = (5 ft)(1 ft) A = 5ft^{2} A = l$$w$ $A$ = (4 ft)(2 ft) $A$ = 8ft$^{2}$ $A$ = $s$$^{2}$ $A$ = (3 ft)$^{2}$ $A$ = 9 ft$^{2}$