Find the area (in square feet) of a trapezoid with height h and bases b1 and b2.

h=6

b1=9

b2=12

The area is

square feet.

I think it's the third one.

Formula for area of trapezoid is (b1+b2) divided by 2 then multiplied by height. So b1 + b2 is 9 + 12 which is 21. Then divide 21 by 2 you get 10.5. then multiply that by height, 10.5 x 6. The area is 63 feet squared.