2006-11-24 05:40:48 · 10 answers · asked by JOHNORTON 1 in Science & Mathematics ➔ Mathematics
2 * pi * radius
2006-11-24 05:45:51 · answer #1 · answered by dlekhtman 5 · 0⤊ 0⤋
Banjuja58 makes a good comment.
The greek letter pi represents the ratio of the perimeter to the diameter of a circle. Note that pi is sort of the greek version of the english p. When the romans began to dominate the world then people started using the latin word circumference rather than the greek perimeter.
2006-11-24 13:48:03 · answer #2 · answered by modulo_function 7 · 0⤊ 1⤋
It's called the circumference in a circle.
c=pi*d=2*pi*r
where
c is the circumference
r is the radius
d is the diameter.
2006-11-24 14:31:27 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋
we just learned this the other day too(even thigh i already knew it)!!!
the formula to finding the perimeter of a circle is
p=2 times pi times the radius of the circle
2006-11-24 13:50:40 · answer #4 · answered by fleecy. 2 · 1⤊ 1⤋
2 x (pi) x radius
radius = length from middle of the circle to edge of circle
can also do this
(pi) x diameter
diameter = length from one side of circle to other (straight through the centre)
(pi) = 3.142...
2006-11-24 14:44:50 · answer #5 · answered by Jen 2 · 0⤊ 0⤋
2*pi*r.
r is the radius (distance from the centre to the edge of the circle).
pi = 3.1415926535...
2006-11-24 13:43:21 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Circumference 0f a circle Formula
C = 2 Ï r
- - - - - - s-
2006-11-24 14:46:35 · answer #7 · answered by SAMUEL D 7 · 0⤊ 0⤋
For a circle, the perimeter is called the circumference.
It is pi *d, where d is the diameter.
(pi = 3.14159.....)
2006-11-24 13:43:43 · answer #8 · answered by banjuja58 4 · 1⤊ 0⤋
2*pi*radius
2006-11-24 13:52:54 · answer #9 · answered by ag_iitkgp 7 · 0⤊ 0⤋
2*pi*r
2006-11-24 14:37:07 · answer #10 · answered by Mirza R 1 · 0⤊ 0⤋