Answer :
To find the area of the trapezoid you add the two bases then multiply by the base and divide by 2.
B1+b2= 24+16=40
40*h=40*12=480
480/2=240
D. 240 square feet.
B1+b2= 24+16=40
40*h=40*12=480
480/2=240
D. 240 square feet.