To find the surface area of the figure, add up all of the areas of the faces. The surface area of the rectangular prism on the left is 2(3 x 7) + (3 x 4) + 2(7 x 4) and the one on the right is 3(3 x 9) + 2(3 x 3) + (5 x 3). The surface area of the entire figure is 224 in2.
To find the surface area add up all of the faces of the prisms: 2(3 x 7) + 2(4 x 7) + 1(4 x 3) + 2(3 x 3) + 3(3 x 9) + 1(3 x 5) = 224 in2.
Answer from: Quest
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