Answer:
480
Step-by-step explanation:
First, lets solve for the area of the 3 rectangles in the prism
One can be found by doing 17*9. The other, 8*9, the last 15*9
Next, lets solve for the 2 triangles. This is found with...
1/2(8)(15). This turns out to be 60, and we multiply that by 2 since there are 2 of those triangles.
Add everything up:
72+153+135+120 = 480
