Show:
Circles
Formulas
Pi
Do the Math!
100
The point in the middle of a circle.
What is the center point?
100
The formula for diameter.
What is radius x 2?
100
The decimal value used for pi.
What is 3.14?
100
The diameter of a circle with a radius of 12 cm.
What is 24 cm?
200
A line segment that goes through the middle of a circle and has both endpoints on the circle.
What is the diameter?
200
The formula for radius.
What is diameter divided by 2?
200
The fraction value used for pi.
What is 22/7?
200
The radius of a circle with a diameter of 15 in.
What is 7.5 in?
300
A line segment that goes from the middle of a circle to a point on the circle.
What is the radius?
300
The formula for circumference.
What is 2 x pi x r or pi x d?
300
The type of letter used for pi?
What is a Greek letter? It is the 16th letter in the Greek alphabet.
300
The circumference of a circle with a radius of 8 meters.
What is 50.24 meters?
400
A line segment that has two endpoints on the circle but doesn't necessarily go through the middle.
What is a chord?
400
The formula for area of a circle.
What is pi x r squared?
400
The mathematician who first discovered pi.
Who is Archimedes?
400
The area of a circle (rounded to the nearest hundredth) with a radius of 5.1 cm.
What is 81.67 square centimeters?
500
The total number of degrees in a circle.
What is 360 degrees?
500
The formula for pi.
What is circumference divided by diameter?
500
Pi is classified as this type of number.
What is an irrational number?
500
The amount of material needed (rounded to the nearest hundredth) to cover a table with a diameter of 22.4 feet.
What is 393.88 square feet?