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Why circumference of circle is 2×pai×radius …

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Why circumference of circle is 2×pai×radius ?

Posted by Kanu Varshney 4 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Sia ? 4 years, 2 months ago

π is defined to be the ratio of the circumference of a circle over its diameter (or 2 times its radius).

This ratio is a constant since all circles are geometrically similar and linear proportions between any similar geometric figures are constant.

If you were looking for how the value of the ratio π is calculated or how we know that the same ratio applies to the area of a circle, then those are different questions. (Ask if either of these are what you were looking for).

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CBSE > Class 10 > Mathematics

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CBSE > Class 10 > Mathematics