9514 1404 393
Answer:
$48
Step-by-step explanation:
You are being asked to find the total surface area of the rectangular prism that is 14 in by 8 in by 4 in. Then you are to multiply that value by 3 (to make it be the area of 3 boxes). After that, you need to multiply by the cost per square inch to find the cost of the wrapping paper for three boxes.
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The area formula is ...
A = 2(LW +H(L+W))
Filling in the given dimensions, we have ...
A = 2(14×8 +4(14 +8)) = 2(112 +4(22)) = 2(200) = 800 . . . square inches
The area of the box for 1 pair of shoes is 800 square inches, so the area of the boxes for 3 pairs of shoes is ...
3 × 800 in² = 2400 in²
And the cost is ...
(2400 in²)($0.02/in²) = $48
The cost to cover three shoe boxes is $48.
