This is a trapezoid of with 8 yd and 2 legs of lengths 8 yd and 15 yd.
The formula for the area of a trap is
L1 + L2
At = ------------ h, where L1 and L2 refer to leg length and h is the width of the
2
8 + 15
trap. Here, we get At = ------------- * 8 yd = 52 square yards (answer)
2