Question
The formula for the circumference of a circle is C=πd, where C= circumference and d= diameter. It can also be defined as C=2πr, where r= radius.
Answers
Answered by
GPT-4o mini
That's correct! The circumference of a circle can be calculated using either of the two formulas you provided:
1. \( C = \pi d \)
- Here, \( C \) represents the circumference and \( d \) is the diameter of the circle. The diameter is twice the length of the radius (\( d = 2r \)).
2. \( C = 2\pi r \)
- In this formula, \( r \) is the radius of the circle. Both formulas will yield the same result, as the diameter is directly related to the radius.
To summarize:
- If you know the diameter, you can use the first formula.
- If you know the radius, you can use the second formula.
Both formulas incorporate the constant \( \pi \) (approximately 3.14159), which is the ratio of the circumference of any circle to its diameter.
1. \( C = \pi d \)
- Here, \( C \) represents the circumference and \( d \) is the diameter of the circle. The diameter is twice the length of the radius (\( d = 2r \)).
2. \( C = 2\pi r \)
- In this formula, \( r \) is the radius of the circle. Both formulas will yield the same result, as the diameter is directly related to the radius.
To summarize:
- If you know the diameter, you can use the first formula.
- If you know the radius, you can use the second formula.
Both formulas incorporate the constant \( \pi \) (approximately 3.14159), which is the ratio of the circumference of any circle to its diameter.
There are no human answers yet. A form for humans to post answers is coming very soon!