Base 1 of an trapezoid is 10 ft base 2 is 8 ft the height is 5 the area is?

The area of a trapezoid is equal to (1/2)(B + b)h].

In our case B = 10 ft, b = 8 ft, and h = 5 ft, So

A = (1/2)(B + b)h = (1/2)(10 + 8)(5) = 45 ft^2