Vocabulary
3.14 or 22/7
Pi
The diameter is of the circle is 10. What is the radius?
5
The radius is 2
12.56
The diameter for the circle is 10.
31.4
A circular pool in front of the town hall has a diameter of 16 feet. How much material is needed to cover the pool for the winter?
200.96 ft sq
The distance from the center of the circle to a point on the outside.
Radius
The radius of the circle is 2.5 cm. What is the diameter?
5 cm
The radius is 3
28.26
The diameter is 13.
40.82
The diameter of a coin is 10mm. What is the circumference?
31.4 mm
The distance from one point on the circle to the other that goes through the center of the circle.
Diameter
The diameter of the circle is 27. What is the radius?
13.5
The diameter is 42.
1384.74
The radius is 12.5.
78.5
Mary wants to buy a table cloth to cover her circular kitchen table. How many square feet should her table cloth measure if the radius of the table is 4 feet?
50.24 ft sq
The amount of space inside of a 2D object.
Area
The circumference of this circle is 18.84. What is the diameter?
6
The diameter is 104.8
8621.6864
The radius is 45.
282.6
What is the area of a pool is the diameter 12 feet?
113.04 ft sq
The distance around a circle.
The diameter of the circle is 0.325. What is the radius?
0.1625
The circumference is 47.1. What is the area?
176.625
The diameter is 3285
10314.9
The area of a pizza is 161.23 cm sq. What is the circumference to the nearest hundredth?
45.03 cm