Make a box thats 32x20 32x20=640 square ft for box 1 For box 2 || 40-32= 8 16x8= 128 square ft for box 2 For triangle 3 20-16=4 Has dimensions of 8x4|| divide by two to the t the area of a triangle (8x4)/2 = 16 square fr 16+128+640= 784 square ft total
