SOLUTION: how do you find an exact circumference of a circle?

Question 1031743: how do you find an exact circumference of a circle?

Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Depends on the info you're given.
Answer by ikleyn(52790) (Show Source): You can put this solution on YOUR website!
.
how do you find an exact circumference of a circle?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Circumference "C" of the circle is

C = ,

where R is the circle's radius, or (which is the same)

C = ,

where D is the circle's diameter.

Here is well known constant pi = 3.14159265 . . . , which is irrational number.

RELATED QUESTIONS
How do you find the exact circumference of a circle with an inscribed polygon measuring... (answered by cleomenius)
How do you find the circumference of a... (answered by stanbon)
How do you find the exact area of a circle? (answered by jcon16)
How do you find the circumference of a quarter circle with a diameter of... (answered by Alan3354)
How do you find the radius of a circle with the circumference of 42 pi... (answered by ikleyn,Alan3354)
how do you find the diameter of a circle when given only the... (answered by elima)
how do you find the area and circumference of a... (answered by vleith)
My question is how do you find the area of a circle and the circumference of a circle?? (answered by richard1234)
How do you find the radius and area of the circle. The circumference of a circle is 4... (answered by lenny460)