To find the area of a trapezoid, you need to add the top and the bottom measurements together.
In this case, 12 + 12 = 24
24 + 5 = 29
Then add the top with the bottom and divide by 2.
29 + 5 = 34
34/2 = 17
Then you multiply by the height. In this case 10.
17 x 10 = 170
The area of the trapezoid is 170 units.