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Posted by 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 - , 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. - , 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 - , Monday, February 23, 2009 at 7:17pm

    Thanks Willow

  • math - , Monday, February 23, 2009 at 7:31pm

    area of circle = pi r^2

  • You're welcome! - , Monday, February 23, 2009 at 7:59pm

    :)

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