Form it
The formula to find the radius
Diameter / 2
What is the fraction form of pi
22/7
The line that goes across a circle through the center
Diameter
Radius is 18 inches. What is the circumference?
113.04 inches
DAILY DOUBLE
D = 16 m
R ?
C?
A?
The formula to find the circumference
C = 3.14 x Diameter
C = 3.14 x Radius x 2
What day is Pi Day?
March 14
D = 78 m. What is the radius?
39 m
The diameter of a semicircle is 13 meters. What is the circumference of it?
33.41 meters
The diameter is 15 m. What is the area?
176.63 m2
The formula to find the radius with the circumference
Circumference/ 2 x 3.14
When was the pi symbol first used?
1706
13.4
C = 56 inches. What is the radius?
8.92 (rounded hundredth)
R = 19 m. What is the area?
1133.54 m2
Formula for the area of a circle
A = 3.14 x r2
Pi is the ratio between what two things
Circumference and the diameter
Give the 5 parts of a circle
1) Radius
2) Diameter
3) Center
4) Circle
5) Circumference
C= 105. What is the diameter?
The Radius is 5.5 m
What is the diameter?
What is the circumference?
What is the area?
D = 11 m
C = 34.54 m
A = 94.99 m2
DAILY DOUBLE
First 30 digits of pi
What did the Egyptians estimate pi to be?
3.16
3.1415926535897932384
Radius is 6.2 cm.
What is the diameter?
What is the Circumference?
D = 12.4 cm
C = 38.94 cm
C = 75.36
A = 452.16 in2