Question

the ratio of the radii of two wheels is 3:4.What is the ratio of their circumference?

Answer 1

r1/r2=3/4

Now ,

C1/C2=2πr1/2πr2

→C1/C2=r1/r2

→C1/C2=3/4

So the ratio of the circumference of wheel is 3:4

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Answer 2

Answer:3:4

Step-by-step explanation:

Let the radii be r1 and r2

:.r1:r2=3:4

r1/r2=3/4

But circumference.=2πr

:.2πr1:2πr2

:.2r1:2r2

i.e. 2r1/2r2=6:8=3:4