The answer is 586 cm²
First, you get the area of the rectangle on the top. The formula for a rectangle is b x h. The base is 11 and the height is 6 so you do 11 x 6 = 66
Then you get the trapezoid at the bottom. The formula for a trapezoid is
1/2 x h(b1 +b2). The height is 20, base 1 is 11 and base 2 is 41. The equation is
1/2 x 20(11 + 41) = 520
Now, you take the area of the rectangle, which was 66, and the area of the trapezoid, which was 520, and add them, 66 + 520 = 586 cm².
