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10 February, 08:30

A soup can have a volume of 54 π in³ and a height of 6 in.

What is the area for the label needed to wrap around the can with no overlaps? Express your answer in terms of π.

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Answers (2)
  1. 10 February, 09:13
    0
    The area of the label is 36*pi in²

    Step-by-step explanation:

    A can of soup has a shape of a cylinder, therefore it's volume is equal to:

    Volume = pi*r²*h

    We need to use the formula above to find the radius of the base, because we need to calculate the lateral area of the cylinder, which is given by:

    Lateral area = 2*pi*r*h

    Applying the data from the problem we have:

    54*pi = pi*r²*6

    pi*r²*6 = 54*pi

    r² = 54*pi / (pi*6)

    r² = 54/6 = 9

    r = sqrt (9) = 3 in

    Therefore the lateral area is:

    lateral area = 2*pi * (3) * (6) = 36*pi in²
  2. 10 February, 12:13
    0
    18π in ²

    Step-by-step explanation:

    This problem bothers on the mensuration of solid shapes, a cylinder.

    Given data

    volume v = 54 π in³

    Height h = 6 in

    In this problem we are considering the surface area of the cylinder

    (not the total though) but the curved surface area

    Let us solve for the radius of the shape

    Volume = πr²h

    54π = π*r²*6

    54/6 = r²

    r² = 9

    r = √ 9

    r = 3in

    Area of curved surface = 2πrh

    Area = 2πrh

    Area = 2π*3*6

    Area = 18π in ²
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