Answer:
28 ft²
Explanation:
You want the surface area of a rectangular prism with dimensions 1 ft, 4 ft, and 2 ft.
Area
The area is given by the formula ...
A = 2(LW +H(L +W))
A = 2((1 ft)(4 f) +(2 ft)(1 ft +4 ft)) = 2(4 +2(5)) ft² = 28 ft²
The surface area is 28 square feet.
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