<PRE><B>Question 817820</B>
c = 2 pi r
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a = 2 pi 2
a = 12.566371
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b = 2 pi 8
b = 50.265482
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revb/reva = (a/b)
revb = reva(a/b)
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revb = 3(12.566371/50.265482)
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revb = 0.75 rpm
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