2006-09-22 13:40:29 · 12 answers · asked by Strawberry_Lynn 5 in Science & Mathematics ➔ Mathematics
tweedle dum tweedle dee
around the circle, pi times D
if the area is declared
the formula is (pi)(r)squared
so basically, the circumference is pi (approx. 3.14) times the diameter of the circle
and the area is pi times the radius squared
2006-09-22 13:43:23 · answer #1 · answered by Anonymous · 1⤊ 0⤋
To "calculate" the circumference of a circle you multiply C=pi x(diameter), or 3.1416d. But to "measure" the circumference, lay a string exactly around the circle and the measure the string with a meter stick.
2006-09-22 13:48:21 · answer #2 · answered by True Blue 6 · 1⤊ 0⤋
To measure it, you would put a string around the outside of the circle and measure the length of the string to go arounds the circle, which is what you asked.
To calculate it, multiply pi by the diameter.
2006-09-22 13:48:32 · answer #3 · answered by spongeworthy_us 6 · 0⤊ 0⤋
Circumference = Diameter * pi
Circumference = Radius * 2 * pi
Diameter = Circumference / pi
Radius = Circumference / pi / 2
2006-09-22 13:48:22 · answer #4 · answered by ? 2 · 1⤊ 1⤋
the length of the circle times pi
2006-09-22 13:41:52 · answer #5 · answered by I'm Sexy!! and you know i am 2 · 0⤊ 1⤋
Pi multiplied by diameter
also
pi multiplied by radius multiplied by 2
2006-09-22 13:47:40 · answer #6 · answered by captain slow 3 · 1⤊ 0⤋
C = pi * diameter
2006-09-22 13:42:31 · answer #7 · answered by patrick 5 · 1⤊ 0⤋
from the middle of the circle to the outer edge and pie r squared.
2006-09-22 13:42:21 · answer #8 · answered by drunken monkey 3 · 0⤊ 1⤋
I think it's 2 * pi * r
2006-09-22 13:50:22 · answer #9 · answered by vetgirl77 2 · 0⤊ 1⤋
take the diameter times 3.14
2006-09-22 13:41:42 · answer #10 · answered by Crystal ♥'s Raymond 3 · 1⤊ 1⤋