Answer: Total surface area = 642.96 square meters
Explanation:
The completed prism is shown in the diagram below
The total surface area is the sum of the area of each face. the faces are in pairs. Thus,
Total surface area = 2(3 x 17.4) + 2(17.4 x 13.2) + 2(3 x 13.2) =
Total surface area = 104.4 + 459.36 + 79.2
Total surface area = 642.96 square meters
