Answer:
The height is 8 yds
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 (b1+b2) h where b1 and b2 are the lengths of the bases
108 = 1/2 ( 15+12) *h
108 = 1/2 ( 27)h
Multiply each side by 2
216 = 27h
Divide each side by 27
216/27 = 27h/27
8 =h
