Posted by awl on Monday, February 23, 2009 at 6:56pm.
What is the circumference and the area of a circle with a radius of 9.3mm.

math  Willow, Monday, February 23, 2009 at 7:09pm
I don't remember the equations exactly, but I know there are equations to find that. Just go an a search engine and type in "circumference equation" or "area equation" and you'll find it.

Read this first! I found the formula for circumference.  Willow, Monday, February 23, 2009 at 7:13pm
The circumference formula is:
c = pi times diameter
OR
c = 2piradius
Sorry, I don't know how to make a pi symbol on the keyboard. :)
I couldn't find the area formula... but just place 9.3 in where I said radius.
Hope I helped! :)

math  awl, Monday, February 23, 2009 at 7:17pm
Thanks Willow

math  Damon, Monday, February 23, 2009 at 7:31pm
area of circle = pi r^2

You're welcome!  Willow, Monday, February 23, 2009 at 7:59pm
:)
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