Math

i need some help understanding the formulas for finding the are for a circle and finding the Circumference.
and the formula they give me i still don't understand can you guys help me understand the easier way to look at the formula?

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  1. can't think of a way.
    Do you have trouble with the area of a rectangle or a triangle?
    Those are just as complicated.

    There are geometric justifications for the circular formulas, but if you can't handle the simple formulas, I don't think you'd be happy with the concepts involving their derivation.

    Maybe you could try google -- why is the circumference 2 pi r? or something.

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    posted by oobleck
  2. Im kinda understanding it so to find the circumference we multiply the diameter by 2?

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  3. No.

    C = pi * 2 * r

  4. or, just C=πd, where d is the diameter

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    posted by oobleck
  5. I'm learning this currently. Circuference=2 times 3.14 times the radius. The raidius is 2 times less than the diameter. Radius=diameter divided by 2.
    Area=3.14 times the radius squared. So it would look like this for area: A=3.14(radius times radius). There you go!

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    posted by Mel

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