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31 August, 10:32

An orange juice can has a diameter of 4 inches and a height of 7 inches. The curved surface of the can is painted orange. How much paint is needed? Round your answer to the nearest tenth.

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  1. 31 August, 13:26
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    Answer: 88 in2

    Step-by-step explanation:

    The side of the can, which when "unrolled" is a rectangle, with width = height of the cylinder (7 in); and length = Circumference = 2π radius

    Surface area of the curved surface of the can = 2π (diameter/2) x height

    Replacing with the values given:

    S = 2π (4/2) x 7 = 2π (2) x 7 = 88 in2

    Feel free to ask for more if needed or if you did not understand something.
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