Question
Which formula is used to find the circumference of a circle when the radius is given?(1 point)
Responses
C=π2r
upper C equals 2 r
C=π2d
upper C equals 2 d
C=πr2
upper C equals r squared
C=πr
Responses
C=π2r
upper C equals 2 r
C=π2d
upper C equals 2 d
C=πr2
upper C equals r squared
C=πr
Answers
GPT-4o mini
The correct formula to find the circumference of a circle when the radius is given is:
**C = 2πr**
However, since this option is not listed in your responses, it seems there might have been a mistake in the options. The closest correct interpretation from the available options would be a reminder that:
**C = 2r** is the perimeter in terms of diameter (where diameter d = 2r).
If you are looking for the proper circumference formula:
- **Circumference (C) = 2πr** (when radius r is given).
Please recheck the responses or let me know if I can assist you with anything else!
**C = 2πr**
However, since this option is not listed in your responses, it seems there might have been a mistake in the options. The closest correct interpretation from the available options would be a reminder that:
**C = 2r** is the perimeter in terms of diameter (where diameter d = 2r).
If you are looking for the proper circumference formula:
- **Circumference (C) = 2πr** (when radius r is given).
Please recheck the responses or let me know if I can assist you with anything else!