Answer:
144 cm²
Explanation:
There are five total sides to the triangular prism. The formula for the area of a rectangle is length · width. The formula for the area of a triangle is 1/2 base · height.
10 · 4 = 40
6 · 4 = 24
8 · 4 = 32
1/2(6 · 8) = 48/2 = 24
1/2(6 · 8) = 48/2 = 24
Add the surface area for each side to get the total surface area.
40 + 24 + 32 + 24 + 24 = 144 cm²