2007-01-25 07:19:21 · 8 answers · asked by Carole H 1 in Science & Mathematics ➔ Mathematics
28.27"
21.99"
15.71"
the formula for the circumference of any circle is to multiply the diameter by pi (which is approx 3.14)
2007-01-25 07:27:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Just use the equation for finding the circumference of a circle:
C = 2*pi*r
or
C = diameter * pi
2007-01-25 15:28:01 · answer #2 · answered by lil e 2 · 0⤊ 0⤋
i couldnt be bothered working it out completely id need a calculator....but here
9": circ = pi x dia = pi x 9 (inches)
7": circ = pi x dia = pi x 7 (inches)
5": circ = pi x dia = pi x 5 (inches)
2007-01-25 15:28:48 · answer #3 · answered by KaZ 2 · 0⤊ 0⤋
3.1416 is P so 9 X P and 7 X P 5 X P will give you ur answers, Have a great Day ;-)
2007-01-25 15:30:52 · answer #4 · answered by Gary & Esme O 1 · 0⤊ 0⤋
9" circle = 28.26" circumference.
7" circle = 21.98 " circumference.
5" circle = 15.7" circumference.
2007-01-25 15:28:38 · answer #5 · answered by David 5 · 0⤊ 0⤋
to solve this you multiply the square of the radius of the circle ( 1/2 the diameter) * pi (3.14)
Circumfrence = pi * r squared
2007-01-25 15:30:30 · answer #6 · answered by CHRIS N 1 · 0⤊ 1⤋
Do your own homework you mooch.
Today's kids are stupid because they don't do for themselves where they should.
2007-01-25 15:36:36 · answer #7 · answered by DJFresh 3 · 0⤊ 0⤋
9"xpi=28.274"
7"xpi=21.991"
5"xpi=15.707"
2007-01-25 15:35:13 · answer #8 · answered by james l 1 · 0⤊ 0⤋