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If the difference between the circumference and diameter of a circle is 60 cm. then the radius of the circle is

If the difference between the circumference and diameter of a circle is 60 cm. then the radius of the circle is Correct Answer 14 cm

ATQ, 2πr  - 2r =  60⇒2r (π - 1)  = 60⇒r = 30π - 1 = 30227 - 1 = 3022 - 77 = 30157 = 3015×7 = 14

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