## Thinking Mathematically (6th Edition)

$A = 135$ square yards
RECALL: The area $A$ of a trapezoid can be found using the formula $A= \frac{1}{2}h(a+b)$ where a and b are the bases, and h = height. The given polygon is a trapezoid with a height of 10 yards and bases of 5 yards and 22 yards. Use the formula above to obtain: $A = \frac{1}{2}(10)(5+22) \\A=5(27) \\A = 135$ square yards