Math

how do you find the cirumference and area of a circle if the radius is 4.5?

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asked by Mario
  1. The formula for circumference is:
    C = 2 * Pi * 2 * radius

    For area:
    A = Pi * radius^2

    Plug the radius into those formulas and solve.

    If you post your answers, we'll be glad to check them.

    http://www.1728.com/diamform.htm

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