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The ratio of circumference and area of a circle is 2 : 7. Find its circumference. (A) 14 π (B) 7/π(C) 7π (D) 14/π |
Answer» (A) 14 π Circumference/ (Area of circle) = 2/7 ∴ 2πr/πr2 = 2/7 ∴ r = 7 ∴ Circumference = 2πr = 2 x π x 7 = 14π |
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