A wire is in the form of a circle of radius 21 CM. it is bent into an equilateral triangle find the side of the triangle
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First circumference of circle
Circumference of circle=2×22/7×21
=2×22×3
=2×66
=132cm
Circumference of circle = perimeter of triangle
perimeter of an equilateral triangle=3×side
132=3×side
132/3=side
side=44cm
therefore,the side of triangle is 44cm
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