Question

The Radii of 2 circles are in ratios 2:3 what is the ratio of their circumferences ?

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Answer 1

Answer:

r1/r2=2/3

2πr1/2πr2=r1/r2=2/3

the ratio of their circumference is 2:3

Answer 2

$C=2\pi r$

2:3

$\frac{2\pi2 }{2\pi 3}$ = $\frac{2}{3}$

answer= $\frac{2}{3}$