G.CIR.5

Explain why the formulas for the area and circumference of a circle work using dissection and informal limit arguments.

Example Problems
The radius of a circle is 2 units.
What is its circumference?
Use
3.14 for π.
The radius of a circle is 7 units.
What is its circumference?
Use
3.14 for .
The radius of a circle is 18 units.
What is its circumference?
Use
3.14 for .
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