2 triangular prisms. The rectangular bases are 10 by 3, 10 by 5, and 10 by 4. The 2 triangular sides have a base of 4 and height
of 3. A rectangular prism has a length of 10, width of 3, and height of 3. 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? 78 square units 144 square units 282 square units 342 square units
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