Question

the circumference of two circles are in the ratio of 5 is to 7 find the ratio between their radius​

Answer 1

Answer:

5:7

Step-by-step explanation:

we know that circumference (C) of circle is 2πr...so using this C of first circle is 2πr1 and the Cof second one is 2πr2 ....so the ratio of first one's circumference to second one's is 5:7(given) .....now 2π-2π got cancelled and we are left with the ratio of r1:r2 =5:7...hope this will help you:)