2007-05-02 16:55:59 · 9 answers · asked by Anonymous in Education & Reference ➔ Homework Help
2πr. That's 2*π*radius.
radius= diameter/2
pi (π) = 22/7
2007-05-02 17:03:31 · answer #1 · answered by j0oh106 1 · 0⤊ 0⤋
Very easy... perimeter of a circle is found by multiplying the diameter by Pi... OR, if you only know the radius of the circle,
2 x radius x Pi = Perimeter
Perimeter = Diameter x Pi
Pi is 3.14 by the way.
Good luck!!
TFB
2007-05-03 00:01:25 · answer #2 · answered by tallfarmboy 2 · 0⤊ 0⤋
Perimeter (..also known as circumference..) is equal to Pi times the diameter. You can also find it by two times the radius times Pi.
2007-05-03 00:06:09 · answer #3 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
The perimeter is its circumference, whose formula is given by:
C = 3.14d
where d = diameter of the circle.
2007-05-03 00:01:24 · answer #4 · answered by sonata0990 1 · 0⤊ 0⤋
You multiply the diameter times pie.
Mathematicians have yet to find an end to the decimals following "3."... It is commonly thought it has no point at which it repeats, but for all practical applications, it is generally accepted as being equal to 3.14...., although the decimal goes on and on and on.
2007-05-03 00:09:38 · answer #5 · answered by ? 6 · 0⤊ 0⤋
It is called Circumfrence which is Diamator ( Distance all way through middle of circle) times Pi (3.14). You can fin the area by Radius (half of diamator) squared times Pi
Hope that helps
2007-05-03 00:04:32 · answer #6 · answered by HeatFan (Wade's House Still! 5 · 0⤊ 0⤋
The link below gives you the formula and the information to make sense.
It is the diameter times pi (3.14)
2007-05-03 00:09:22 · answer #7 · answered by debijs 7 · 0⤊ 0⤋
Coffee Pie Donuts
C = pi * d
Circumference = pi * diameter
2007-05-03 00:05:25 · answer #8 · answered by math guru 4 · 0⤊ 0⤋
it's called the circumference.
You do pi times the diameter (twice the radius) to get the circumference.
2007-05-03 00:01:23 · answer #9 · answered by grawpish 2 · 0⤊ 0⤋