2007-02-21 01:29:53 · 9 answers · asked by David R 1 in Science & Mathematics ➔ Mathematics
C = 2 * π * r
r = C / (2 * π)
r = 3.5 / (2π)
r = ~0.557
2007-02-21 01:53:03 · answer #1 · answered by C D 3 · 1⤊ 0⤋
Why won't be able to you're making a circle? in case you probably did, you might even see that the size of the string will become the gap around the circle, a.ok.a. "circumference" So the circle's circumference is 11.5 inches. The formulation for circumference is pi*diameter. as a result, you will discover the diameter with the aid of installation here equation: 11.5 = pi*diameter diameter = 11.5/pi inches it rather is approximately 3.sixty six inches
2016-11-24 21:52:54 · answer #2 · answered by donegan 4 · 0⤊ 0⤋
Circumference = 2 pi * radius.
Therefore radius = circumference / (2*pi)
2007-02-21 01:35:58 · answer #3 · answered by Anonymous · 0⤊ 0⤋
C=2*pi*r
2007-02-21 01:33:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Simple
circumference of a circle is=2 x pi x radius.
From here find radius= 3.5/(2 x 3.14)
=.557 inches.
2007-02-21 01:47:46 · answer #5 · answered by ish2rock 2 · 0⤊ 0⤋
circumference of a circle =2 x pi x radius, while pi = 3.14... .
So radius = circumference / ( 2 x pi)
Th
2007-02-21 01:38:32 · answer #6 · answered by Thermo 6 · 0⤊ 0⤋
Circumference of a circle formula
c = 2 π r
c / 2π = r. . .use this formula
3.5 / 6.283185307 = r
0.557042301 = r
radius is 0.557 inches rounded to three decimal places
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2007-02-21 03:13:20 · answer #7 · answered by SAMUEL D 7 · 0⤊ 0⤋
Circum. = 2 pi r
Use algebra to rearrange the equation
r = circum. /(2 pi)
2007-02-21 01:37:40 · answer #8 · answered by Diogenes 7 · 0⤊ 0⤋
3.50= r / 2X3.14
2007-02-21 01:39:21 · answer #9 · answered by michael o 5 · 0⤊ 0⤋