## Basic College Mathematics (9th Edition)

The correct solution: $A$ = 203 ft$^{2}$
Errors in the above solution: 1) When determining the area of a trapezoid the lengths of the parallel sides are summed. 2) When determining the area the units should be squared The correct solution: $A$ = (o.5)(11.6 ft)(22 ft + 13 ft) $A$ = (0.5)(11.6 ft)(35 ft) $A$ = 203 ft$^{2}$