2007-09-26 23:22:00 · 5 answers · asked by Becky 1 in Science & Mathematics ➔ Mathematics
pi is a constant when you take the ratio:
pi = c/d
where
c is circumference
d is diameter
we can rewrite the equation as
c = pi x d ... (1)
So, the relationship between the diameter and the circumference is:
d : c
from (1), substitute c = pi x d, we get,
d : pi x d
divide both sides by d, we get,
d/d : pi x d/d
1 : pi
This means that if the diameter is 1, then the circumference is pi (3.1415926) times larger.
Note: An analogy is that if you run around a circle and I run along the diameter, when you complete your circle, I would have ran along the diameter about 3X.
So the circumference is 3.14X larger than the diameter.
c = 3.14 x d
2007-09-26 23:41:03 · answer #1 · answered by ideaquest 7 · 0⤊ 0⤋
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RE:
The relationship between the diameter and the circumference of a circle is 1:pi. What does this mean?
2015-08-15 00:30:35 · answer #2 · answered by Ellene 1 · 0⤊ 0⤋
It means for a perfect circle, the ratio of diameter to circumference is 1/3.14
So if the diameter is 2, the circumference is 6.28
2007-09-26 23:24:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋
2πr = circumference of circle
2r = diameter
πd= circumference of circle
d= circumference of circle ÷ π
∴ a whole (1) circumference of circle ÷ π
= 1 ÷ π
= diameter of the circle
2007-09-26 23:32:52 · answer #4 · answered by ±±±±±±± 4 · 0⤊ 0⤋
Pi=3.14159......
Therefore your question means that the circumference of a circle is 3.14159.... times greater than its diameter
Pi x diameter = circumference
2007-09-26 23:24:49 · answer #5 · answered by Andrew M 2 · 0⤊ 0⤋
Ans. circumfarence ofa circle= pi*d
pi value beeing constant circumfarence varries with dia
2007-09-26 23:28:53 · answer #6 · answered by Sasi Kumar 4 · 0⤊ 0⤋
""""D : C
"""2r : 2 π r
""""1 : π
ie C = π D
2007-09-27 04:41:59 · answer #7 · answered by Como 7 · 0⤊ 0⤋