2007-02-22 09:36:40 · 7 answers · asked by cooper 1 in Science & Mathematics ➔ Geography
C= pi D or 2 pi r
where D = diameter and r = radius
Area = pi r ^2
2007-02-22 09:44:13 · answer #1 · answered by Don E 4 · 0⤊ 0⤋
The circumference is the perimeter of a circle. The circumference of a circle is C= 3.14(pie) multiplied by d(diameter). The radius is 1/2 of a diameter.
2007-02-22 17:48:20 · answer #2 · answered by please_knowimme 2 · 0⤊ 0⤋
circumference = diameter * pi
where pi is roughly 3.14159
several people have stated it is pi * radius^2. This is actually the area of a circle, not the circumference.
2007-02-22 17:45:32 · answer #3 · answered by dpawson 4 · 0⤊ 0⤋
Pi times the radius squared.
2007-02-22 18:41:41 · answer #4 · answered by 3lixir 6 · 0⤊ 1⤋
Pi 3.14 r radius squared
2007-02-22 17:43:49 · answer #5 · answered by Gen 4 · 0⤊ 1⤋
diameter times 3.14
2007-02-22 17:44:18 · answer #6 · answered by rosemary 2 · 0⤊ 0⤋
*CIRCUMFERENCE*
Just pi times diameter.
2007-02-22 17:45:53 · answer #7 · answered by anonymous 4 · 0⤊ 0⤋