Question

the ratio of diàmeters of 2 circles is 3:4. find the ratio of their circumferences​

Answer 1

Answer:

$ratio \: of \: diameter \: of \: 2 \: circle \: = \frac{3}{4} \\ \frac{2r1}{2r2} = \frac{3}{4} \\ \frac{r1}{r2} = \frac{3}{4} \\ ratio \: of \: circumfenceof \: 2 \: circle \: = \frac{2\pi \: r1}{2\pi \: r2} \\ = \frac{r1}{r2} \\ = \frac{3}{4}$

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