Question

Two circles have diameter in the ratio 1:3 .Find the ratio of the circumference.

Answer 1

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Answer 2

Step-by-step explanation:

hi there,

diameter of the first circle be x

radius of the first circle be x/2 unit

diameter of the second circle be 3x

radius of the second circle be 3x/2

∴ratio=2$\pi$x/2 : 2$\pi$3x/2

         =x:3:x

         =1:3

hence, 1:3 is the required ratio.

hope, this will help you :D