Radius formula

[Mousie61]

Can anyone give me some tips on how write a formula to calculate the length
of an arc of a perfect circle.

ie: I have a circle with a radius of 1500.
What would the circumfrence calculate to?
If I slice the circle in two uneven halves, what would be the length of
each of the arcs?

Thanks...
Wayne

 

[Andy B]

Hi

The circumference of a circle is 2piR, where pi is 22/7 and R is the radius.
A radius of 1500 will give you a circumference of 9428.57

Try here for an answer to your second question:
http://mathforum.org/dr.math/faq/faq.circle.segment.html

Andy.

 

[JE McGimpsey]

Or, if radius is in A1,

=2 * PI() * A1 ==> 9424.78