find the circumference of a circle whose radius is21
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circumfarance of circle=2¶r
circumfarance of circle=2×22/7×21=132cm.
circumfarance of circle=2×22/7×21=132cm.
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Answered by
1
Using
2.pi.r(circumfairence of a circle)
we get
2(22/7)21
=132
2.pi.r(circumfairence of a circle)
we get
2(22/7)21
=132
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