an equilateral triangle of each side 4.18cm is made of a write. if the same piece of wire is bent in into a ring. find the diameter of the circle
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side of equilateral triangle=4.18cm
perimeter=3*4.18
=12.54
now
circumference of ring= 2pir
12.54=2*22/7*r
A.T.Q given that same piece of wire bent into a ring that's why we will take perimeter=circumference
12.54*7=44*r
87.78/44=r
r=1.995
diameter =2r
=2*1.995
= 3.99
hope so this will help you
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