What is the surface area of the triangular prism? a) 144 cm2 b) 216 cm2 c) 225 cm2 d) 256 cm2 eliminate

Hi there!

To find the surface area, we need to find the area of all of the faces. The triangle face = 4 x 6, and the rectangular faces = 2(5 x 12) + 1(6 x 12). All we are doing is simply finding the area of each face and adding it together. The area of the triangles = 24, and the area of the rectangles = 192. Then, add the two values to get 216cm^2.

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