Question

Find the surface area of the prism shown below. You can assume that this prism has all faces, including the bottom.

Show all formulas, work, and drawings that you made to answer the question, and do not forget to include appropriate units.

Answer 1

13,920 units²

Explanation:

Bottom = 120 x 30 = 3600

2 long sides = 2(20 x 120) = 4800

2 short sides = 2(20 x 30) = 1200

2 top sides = 2(17 x 120) = 4080

2 triangular sides = 2(1/2 x 30 x 8) = 240

Total surface area = 3600 + 4800 + 1200 + 4080 + 240 = 13,920 units²