"Burt" wrote in message
...

I can't remember the formula for the life of me.
If a dish is almost 3 ft across and I want to segment it like an orange
into 10
segments how do I calculate how wide each will be at the rim?
So I end up with a dish that has 10 sides.

I'm math clueless.

The arc length = (diameter*pi)/10
The chord length = (sin 18 degrees)*diameter
which is .309016994*diameter

For other circle splitting, the arc length is (diameter*pi)/ # of equal
segments.
The chord length is (sin 180/# of equal segments)*diameter.

For the 3' example the arc length is .942477796... feet or 11.30973355...
inches. The chord lengths are .92705098... feet and 11.1246118... inches.
The units and accuracy you require are up to you.

I hope I got all the parentheses right.

TW