Developing Formulas for Circles and Regular Polygons Flashcards

1
Q

What is the formula for the Area of a Circle?

A

pi(r^2).

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2
Q

What is the formula for the Circumference of a Circle?

A

2pir or pid.

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3
Q

What is the formula for the area of a (regular) Polygon?

A

A=1/2aP; a is the apothem and the perimeter is P.

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