Answer:
569.5 ft^2
Explanation:
You have a rectangle and a trapezoid.
Area of rectangle = A = lw = 20 x 18.5 = 370
For the trapezoid
the height h is 29 - 18.5 = 10.5
the 2 bases are 20 and 18
A = 1/2h(a+b) = 1/2 x 10.5(20 + 18) = 199.5
Total: 370 + 199.5 = 569.5