6
AssignmentMultiple Choice

Surface Area of Composite Figures

Question 6 • Math 7 B (M12 25/26 S2)

The top two nets represent the triangular prisms that are attached to the bases of a rectangular prism. The composite figure is composed of all three prisms. The shaded areas are faces that are shared between the prisms. What is the total surface area of the composite figure?

Answer
A
78 square units
B
144 square units
C
282 square units
D
342 square units
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