The diameter of a circle is 105 cm less than the circumference. What is the diameter of the circle?

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Accepted Answer

∵ πd-d = 105 cm ⇒ (π -1 ) d = 105 cm ⇒ [(22/7)-1] x d = 105 cm ∴ d = (7/15) x 105 cm = 49 cm

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