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Determine the total surface area of the rectangular prism.
the angles are 10 in, 9 in, and 3 in.
A. 147 square inches
B. 270 square inches
C. 294 square inches
D. 540 square inches
To determine the total surface area of the rectangular prism, we need to find the area of each of the six faces and then add them together.
The formula for the surface area of a rectangular prism is:
2lw + 2lh + 2wh
Given the dimensions:
Length (l) = 10 in
Width (w) = 9 in
Height (h) = 3 in
Plugging the values into the formula:
2(10)(9) + 2(10)(3) + 2(9)(3)
= 180 + 60 + 54
= 294 square inches
Therefore, the total surface area of the rectangular prism is 294 square inches.
Answer: C. 294 square inches