Question

Which equation can be used to find the area of the of the trapezoid?

A) A = 2(15 + 23)(9)

B) A = 2(15 + 23)(9)

C) A = 1/2(15 + 23)(9)

D) A = 1/2 (152 + 232)(92)

Answer 1

C) 1/2(15 +23)(9)

Explanation:

The formula for the area of a trapezoid in terms of base lengths b1 and b2 and height h is ...

... A = 1/2(b1 +b2)h

Substituting the values shown in the figure, this becomes ...

... A = 1/2(15 +23)(9) . . . . . matches selection C