Calculate the perimeter of quadrant of a circle of radius 21 cm
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Perimeter of a circle= 2×22/7×r×theta/360 degree
here theta=90 degree
and radius= 21
=2×22/7×21×90/360
=540cm
here theta=90 degree
and radius= 21
=2×22/7×21×90/360
=540cm
Answered by
2
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