Question

the ratio of the diameters of two circles is 3is to 4
find the ratio of their circumference

Answer 1

let the diameters of two circles is 3x and 4x .

circumference = 2πr

ratio = 2π(3x)/2π(4x) = 3/4 = 3:4 (3 is to 4)

Answer 2

Answer:

Step-by-step explanation:

If the diameter of these circles is in the ratio 3:4

D1:D2 =3:4

Circumference=πD

C1:C2=πD1:πD2

Therefore I will be cacelled out

Then ratio of there circumference is 3:4