what are some formulas to find the area diamete,circumference and radius of a circle and other polygons.?

Question

Mostly circles but if you can make the formula to the polygons easy to understand.

Answer 1

For a circle, it's pi x r^2

For most polygons, it's essentially height x width.

Though I could list them, it might be easiest to just check out the following.

http://www.math.com/tables/geometry/areas.htm

Hope that helps!

Answer 2

What exactly are u asking for?Circi=umference of a circle is given be C=2(pie)(radius).And the area of circle is A=pie(radius)(radius).