CIRCUMFERENCE OF A CIRCLE... Circumference (C) is the distance around the outer ring. C = Pi x d or Pi2r/2Pir Pi is a constant and is approximately equal to 3.14. Picture
Example
Radius (r) is the distance from the center to the outer ring... Picture
The diameter (d) of circle is twice the length of the radius... D = 2 x r or 2r Picture
Example
AREA OF A CIRCLE... Area = Pi x r² Pi = 3.14 Radius is the distance/length from the center to the outer ring... Picture
Example
**just remember the formulas and it would be easy...