Question

between the radius of a circle and the distance around the circle the same for all​ circles? Explain.
Question content area bottom
Part 1
The circumference of Circle A is
  
42 pi meters.
​(Type an exact answer in terms of pi​.)
Part 2
The circumference of Circle B is
  
enter your response here meters.
​(Type an exact answer in terms of pi​.)

Answer 1

Short answer: Yes. The ratio is the same for all circles.

Explanation: Circumference C and radius r are related by C = 2πr. Dividing both sides by r gives C/r = 2π, which is a constant (2π) for every circle.

Using that:
- If Circle A has circumference 42π m, its radius is r = C/(2π) = (42π)/(2π) = 21 m.

For Circle B I don’t have its radius or diameter from your message. To find its circumference use:
- C = 2π·r (if you know the radius) or
- C = π·d (if you know the diameter).

If you tell me Circle B’s radius or diameter I’ll compute its exact circumference in terms of π.