A: 59.5ft^2
You need to add the top length and the bottom length, and then multiply that answer by the vertical height of the shape.
7 + 10 = 17
17/2 = 8.5
8.5 x 7 = 59.5
You can also double check this by working out the area of the square and then the area of the triangle, and adding them together.
7 x 7 = 49
7 x 3 = 21
21/2 = 10.5
49 + 10.5 = 59.5