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20 January, 07:09

What is the surface area of a cylindrical ring if its outside diameter is 16 mm and its inside diameter is 10 mm? Round your answer to the nearest whole number.

A. 92mm^2

B. 118mm^2

C. 385mm^2

D. 123mm^2

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Answers (1)
  1. 20 January, 08:57
    0
    S1=200.96

    S2=78.5

    Sring=200.96-78.5=122.46 ≈ D. 123mm^2
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