Vocab
The center of the circle.
Center point.
What is the radius of a circle that has a diameter of 12 inches?
6 inches
What is the diameter of a circle that has a radius 10.
20
The diameter is 10 inches. What is the circumference?
31.4 inches
The radius is 4 inches. What is the area of the circle?
50.24
Starts at the center, to the arc.
Radius.
What is the radius of a circle that has a diameter of 24 inches?
12 inches
What is the diameter of a circle that has a radius of 20
40
The diameter is 5 inches. What is the circumference?
15.7 inches
The radius is 5 inches. What is the area of the circle?
78.5 inches
Arc through the center, to the arc.
Diameter
What is the radius of a circle that has a diameter of 36 inches?
18 inches
What is the diameter of a circle that has a radius of 40
80
The circumference is 31.4 inches. What is the diameter?
10 inches
The radius is 12 inches. What is the area of the circle?
452.12 inches.
C= _x_x_
DxN
What is the radius of a circle that has a diameter of 78 inches?
39 inches
What is the diameter of a circle that has a radius of 54.9
109.8
The diameter is 19 inches. What is the circumference?
59.66 inches
The radius is 15 inches. What is the area of the circle?
706.5 inches
A= _x_x_
RxRxN
What is the radius of a circle that has a diameter of 99 inches?
49.5 inches
What is the diameter of a circle that has a radius of 90.6?
181.2
The circumference is 1/9 inches. What is the diameter?
157/450
The radius is 60 inches. What is the area of the circle?
11304 inches