Question

If the ratio of radii of two circles is a tracer 8:15 the ratio of their circumference is

Answer 1

Answer:

$circumference \: of \: circle = 2πr \\= \frac{2πR1}{2πR2} = \frac{8}{15} \\= \frac{R1}{R2} = \frac{8}{15} \\= R1:R2 = 8:15$

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