Vocab
The middle of the circle
Center
What are the 3 digits of pi we are expected to know?
3.14
What is the circumference of a circle with a diameter of 1 meter?
3.14 meters
What is the area of a circle with a radius of 1 foot?
3.14 square feet
A line connecting 2 points on the circle
Chord
What fraction can we use as a close aproximation of pi?
22/7
What is the circumference of a circle with a radius of 4 inches?
25.12 inches
What is the area of a circle with a diameter of 6 yards?
28.26 square yards
A line connecting the center of the circle to any point on the circle
Radius
Pi is the ratio of ____________ to ______________
Circumference to Diameter
What is the circumference of a circle with a diameter of 17.32 inches?
54.3848 inches
What is the area of a circle with a radius of 1.27 feet? (round to the nearest hundreth)
5.06 square feet
The entire peremeter of a circle
Circumference
How can I get pi from knowing that a circle has a circumference of 31.4 inches and a diameter of 10 inches?
31.4 divided by 10 is equal to 3.14
What is the circumference of a circle with a radius of 5.55 centimeters?
34.854 centimeters
What is the area of a circle with a diameter of 16.44 lightyears?
212.164776 square lightyears
A chord that goes through the center of the circle
Diameter
True or false: a shape with a circumference of 22.12 and a radius of 3.5 is a circle
False
What is the radius of a circle with a circumference of 43.68 miles? (round to the hundreths)
6.96 miles
What is the diameter of a circle with an area of 523 square feet? (round to the nearest hundreth)
25.81 feet