Question

The ratio of the radii of two circles is 3:7. Calculate ratio of their circumstances. The ratio of the two radii of two circles is 3:7. Calculate ratio of their circumstances.

Answer 1

Answer:

If the ratio of radii of two circles is 3:7 . Hence the ratio of circumstances is 3:7.

Answer 2

Answer:

The ratio of the two circumferences is 3 : 7.

Step-by-step explanation:

The formula to compute the circumference of a circle is:

$C=2\pi r$

Let the two radii be 3x and 7x.

Compute the ratio of the two circumferences as follows:

$\frac{C_{1}}{C_{2}}=\frac{2\pi r_{1}}{2\pi r_{2}}=\frac{ r_{1}}{ r_{2}}=\frac{3}{7}$

Thus, the ratio of the two circumferences is 3 : 7.