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Question

Which of the following is a factor of 2π(h+r)?


A

h+r

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B

h

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C
2h
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D
2r
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Solution

The correct option is A

h+r


(h+r) is a factor of 2π(h+r) because
(h+r) can divide 2
π(h+r) leaving remainder 0.

h, 2h and 2r cannot completely divide 2
π(h+r), hence they are not a factor of 2π(h+r).


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