Question

The circumference of circle a is 3 times greater than the circumference of circle

b. if the radius of circle a is 12 meters, what is the radius of circle b?

Answer 1

We know, Circumference of a Circle = 2πr

In mathematical form, You can write it as:
2πr₁ = 3(2πr₂)

2π(12) = 6πr₂

24π = 6πr₂

r₂ = 4 m

In short, Your Answer would be: 4 meter

Hope this helps!