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If the difference between the circumference and diameter of a circle is 60 cm , then the radious of the circle is-

If the difference between the circumference and diameter of a circle is 60 cm , then the radious of the circle is- Correct Answer 14 cm

এখানে, 2π - 2r =60 ⇒ 2r (π -1) = 60 ⇒r (227-1)=30⇒r ×157=30⇒r=30×715∴ r =14

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