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A stack of 10 quarters is a cylinder. If the diameter of a single quarter is 2.2 cm and the approximate height is 0.17 cm, what is the surface area of a 10-quarter stack?

  • math - ,

    Total height for 10 quarters
    h= 0.17*10=1.7cm
    Diameter = 2.2 cm, so radius,
    r= 1.1 cm

    Total surface area (including two ends)

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