Developing Formulas for Circles and Regular Polygons Flashcards
1
Q
What is the formula for the Area of a Circle?
A
pi(r^2).
2
Q
What is the formula for the Circumference of a Circle?
A
2pir or pid.
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.