Radius
What is a Radius?
The radius is the distance from the edge of the circle to the center.
What is a Diameter?
The diameter is a straight line that passes through the center of the circle.
What is a Circumference?
A perimeter of a circle
What is the formula of Radius?
Diameter divided by 2
What is the formula of diameter?
Radius times 2
What is the formula of Circumference?
Pi x Diameter or 2 x Pi x Radius
If my diameter is 18, then the radius is?
9
If my radius is 8, then what is my diameter?
16
What is 2 x Pi x 21
131.94
If my diameter is 36, then what is my radius?
18
If my radius is 36, then what is my diameter?
72
What is 2 x Pi x 3
18.84
If my diameter is 35, then what is my radius?
17.5
If my radius is 37.5, then what is my diameter?
75
What is 2 x Pi x 6
37.69