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March 29, 2017

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What is the area of the circle if the radius is 2 cm?

A. 3 cm squared
B. 6 cm squared
C. 10 cm squared
D. 12 cm squared

I don't really know the answer to this one because I am not sure what the formula for area of a circle is. If I knew the formula the maybe I could figure the answer.

  • Circumference,Radius, Diameter - ,

    http://www.mathgoodies.com/lessons/vol2/circle_area.html

  • Circumference,Radius, Diameter - ,

    pi r^2
    or
    pi*r*r (multiply)

    if you use 3 for pi then you will get your answer.

  • Circumference,Radius, Diameter - ,

    diameter gahhhh

  • Circumference,Radius, Diameter - ,

    the answer is 12 square

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