Question

A roll of wrapping paper measures 25 in.×405 in.
The boxes being wrapped are 16 in.×14 in.×6 in.
How many complete boxes can be wrapped with one roll of wrapping paper?(1 point)

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Answer 1

Surface area of one box = 2(16·14 + 16·6 + 14·6) = 2(224 + 96 + 84) = 2(404) = 808 in².

Area of roll = 25·405 = 10,125 in².

Number of complete boxes = floor(10,125 ÷ 808) = floor(12.53...) = 12.

So 12 complete boxes can be wrapped.