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Question

The ratio of the circumference of a circle to twice the diameter of the circle is

A
π4
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B
π2
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C
π
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D
2π
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E
4π
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Solution

The correct option is B π2
We know the circumference of a circle is 2πr which is equal to πd as twice of radius is diameter, 2r=d.
Ratio of circumference of a circle to twice of diameter will be πd`2d=π2.

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