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What is another way to find the area of a circle?

I’m really stuck on my maths homework I need to find some ways to finding the area of a circle. Can somebody please help me!?

The area of a circle is pi*r^2, read as: pi-r-squared. Another way, is if you know the radius and circumference, the area of a circle is also equal to circumference times the radius, divided by 2, or A = (C*r)/2.

Finally, if you put a circle inside of a square with a length equal to the radius of the circle, the the area of the circle will always equal be .79 x A of square.

This entry was posted on Saturday, December 26th, 2009 at 1:21 am and is filed under circle area. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

6 Responses to “What is another way to find the area of a circle?”

  1. pie times (radius squared)

    pie= 3.14
    References :

  2. the easiest way to find the area of a circle is to take the radius multiply it by pi and then square it. the formula is pi (r) squared
    So it would be ….pi *r*r
    References :
    http://www.geocities.com/kevinbisesser/AreaOfCircle.html

  3. Pie(approximately 3.14159265358979)times radius squared. That is the easiest way. Why didn’t you write the problem, I could have explained and given you the answer.
    References :

  4. Dude From Downtown on December 26th, 2009 at 8:12 am

    22/7 *(radius)^2

    Understand
    References :
    Dude not a nerd

  5. The area of a circle is pi*r^2, read as: pi-r-squared. Another way, is if you know the radius and circumference, the area of a circle is also equal to circumference times the radius, divided by 2, or A = (C*r)/2.

    Finally, if you put a circle inside of a square with a length equal to the radius of the circle, the the area of the circle will always equal be .79 x A of square.
    References :
    http://en.wikipedia.org/wiki/Circle

  6. ((D/2) X (D/2) X 6.2832) / 2
    References :

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