Answer:
322 in²
Explanation:
You want the surface area of the rectangular prism with edge lengths 7 in, 14 in, and 3 in.
Area
The surface area can be computed using the formula ...
A = 2(LW +H(L +W))
A = 2(7·14 + 3(7 +14)) = 2(98 +63) = 322
The area of the prism is 322 square inches.
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