Algebra- circles

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On my paper, there's a circle drawn inside of a square, whose side length is 12. I have to find diameter, radius, area, area in terms of pi, ...
For the diameter first of all, would it be 12? Or do I have to subtract?

  • Algebra- circles -

    Yes. The diameter is 12.

  • Algebra- circles -

    So then, :
    Would the radius be 6?
    Would the area be 354.9456? or 113.04?

  • Algebra- circles -

    You're right about the radius = 6. And your second answer is correct for the area.

    The area is PI * r^2.

    3.14 * 36 = 113.04.

  • Algebra- circles -


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