 Circle formulas,
a selection of answers from the Dr. Math archives.
 Circle Formulas  Dr. Math FAQ
 From the Dr. Math Geometric Formulas FAQ: formulas for radius, diameter,
circumference, area; arc, segment, and sector of a circle.
 Circle Formulas: Area and Perimeter
 I get confused by the different formulas, such as Pi r squared or Pi d.
 Circle Area and Circumference
 Are radius and diameter the same as area and circumference?
 Finding the Area of a Circle
 The formula, and how it works.
 Finding the Circumference
 Would you be able to tell me how to work out the circumference of a circle?
