Question

Diameter of two circles are 15 cm and 25cm respectively What is the ratio of their circumference​

Answer 1

Answer:

3:5

Step-by-step explanation:

circumference of triangle=2 pi r

r1=7.5 & r2=12.5

therefore ratio of the circumference is (2 pi r1)/(2 pi r2)=r1/r2

7.5/12.5=3/5=3:5 (ANS)