Question

Somebody please help me

Answer 1

382.5 square inches

Explanation:

The surface area of a 3D object is the sum of the area of all of the surfaces. Therefore, the surface area of this prism is:

`9\cdot 13.5 + 2((1)/(2) \cdot 10\cdot 9)+ 9\cdot 9 + 10\cdot 9= 382.5` square inches.

Hope this helps!