Pi
First ten digits of Pi?
3.141592653
What is Circumference?
Distance around a circle
What is Diameter?
Line passing through the middle of the circle
What is Area?
The surface inside a shape
What is the area of a circle if the radius is 21 meters? Use 3.14 as pi.
1384.74 meters squared
What is Pi?
An irrational number/Ratio
Formula for Circumference?
C=πD
Formula for Diameter?
D=C/π
Formula for Area of a circle?
A=πr squared
What is the circumference of a circle if the diameter is 99 meters?
99π meters
How to find Pi?
Circumference/Diameter
Find the circumference of a circle if the diameter is 5 meters. Use 3.14 as pi.
15.7 meters
Find the diameter of a circle if the circumference is 25.36 meters squared. Use 3.14 as pi.
8.07 meters
Find the area of a circle if the radius is 3. Use 3.14 as pi.
28.26 meters squared
What is the diameter of a circle if the circumference is 18.84 meters? Use 3.14 as pi.
6 meters