a piece of wire in the shape of rectangle 8.4 cm long and 5.4 CM broad is this app is the bent into the form of a circle find the radius of the circle
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perimeter of rectangle=2(l+b)
=2(8.4+5.4)=2(13.8)
=27.6cm
2πr=27.6
2×3.14×r=27.6
r=27.6/2×3.14
r=4.29cm
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