Mathematics
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The ratio of the radii of two circles is 9:16. Then what is the ratio of their circumferences?

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pami

56.52:100.48 circumference is the diameter × π diameter is radius × 2 first circle -> r = 9 d = 9 × 2 = 18 c = 18 × π ≈ 56.52 second circle -> r = 16 d = 16 × 2 = 32 c =  32 × π ≈ 100.48 so the ratio of circurfremce for 2 circles that have a ratio of radii 9:16 would be 56.52:100.48

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