Answer: 1520 square feet
Step-by-step explanation: Find the area of the triangle on the right. The bases are 38 and 40. Use the formula 1/2(l*w). 38*40=1520. 1520/2=760.
Next find the area of the triangle on the left. Since it's a parallelogram, both the top and bottom will be the same, so the other base is 40 ft. This also means that the area will be the same, so its area is also 760.
Finally add up the areas of the two triangles. 760+760=1520.