Find the surface area of a regular pentagonal prism with side length 8, altitude 20, and apothem approximately 5.5

Check the picture below.

notice, the prims is really just 5 rectangles, of 8x20 each, and two pentagons.

so, just get the area of the 5 rectangles, and the 2 pentagonal bases, sum them up, and that's the surface area of the pentagonal prism.



recall, you have two pentagons.

Polar coordinates is 8,9