SOLUTION: A wire in the form of a square of side 7.5cm is bent into a circle. Find the radius of the circle.

Question 887606: A wire in the form of a square of side 7.5cm is bent into a circle. Find the radius of the circle.
Answer by dkppathak(439) (Show Source): You can put this solution on YOUR website!
A wire in the form of a square of side 7.5cm is bent into a circle. Find the radius of the circle.
Solution
perimeter of square = 4xside of square
= 4x7.5 =30 cm
as per given conditions perimeter of square will be equal to circumference of circle
circumference of circle = 30 cm
2 pie r=30
r =30/2x pie
r= 30x7/2x22
r= 210/44 = 105/22 =4.7727 cm
Answer 4.8 cm approx
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