The ratio of the circumference of any circle to its diameter.
Exactly 3.14
Exactly 3.1415
Exactly 3.141593
2. Multiple Choice
1.5 minutes
1 pt
A Circle has a radius of 6 inches. What is the circumference of the circle? (Best Choice)
3π or about 9.42 in
6π or about 18.84 in
12π or about 37.68 in
36π or about 113.04 in
3. Multiple Choice
30 seconds
1 pt
A Circle has a radius of 6 inches. What is the area of the circle? (Best Choice)
3π or about 9.42 in2
6π or about 18.84 in2
12π or about 37.68 in2
36π or about 113.04 in2
4. Multiple Choice
2 minutes
1 pt
A Circle has a diameter of 10 centimeters. What is the circumference of the circle? (Best Choice)
5π or about 15.7 cm
10π or about 31.4 cm
20π or about 62.8 cm
100π or about 314 cm
5. Multiple Choice
1.5 minutes
1 pt
A Circle has a diameter of 10 centimeters. What is the area of the circle? (Best Choice)
5π or about 15.7 cm2
10π or about 31.4 cm2
25π or about 78.5 cm2
100π or about 314 cm2
6. Multiple Choice
1.5 minutes
1 pt
A Circle has a radius of 12 inches. What is the circumference of the circle? (Best Choice)
24π or about 75.36 in
12π or about 37.68 in
144π or about 452.16 in
576π or about 1,808.64 in
7. Multiple Choice
1.5 minutes
1 pt
A Circle has a radius of 12 inches. What is the area of the circle? (Best Choice)
24π or about 75.36 in2
12π or about 37.68 in2
144π or about 452.16 in2
576π or about 1,808.64 in2
8. Multiple Choice
2 minutes
1 pt
A circular window has a diameter of 24 inches. What is the area of the glass in the window ? (Best Choice)
24π or about 75.36 in2
12π or about 37.68 in2
576π or about 1,808.64 in2
144π or about 452.16 in2
9. Multiple Choice
30 seconds
1 pt
A circular window has a diameter of 24 inches. A piece of metal is to go around the window for a frame. How long does the metal need to be? (Best Choice)
24π or about 75.36 in
12π or about 37.68
576π or about 1,808.64 in
144π or about 452.16 in
10. Multiple Choice
2 minutes
1 pt
A center circle on a basketball court has a diameter of 12 feet. How long is the line that wraps around the circle? (Best Choice)
6π or about 18.84 ft
12π or about 37.68 ft
36π or about 113.04 ft
144π or about 452.16 ft
11. Multiple Choice
2 minutes
1 pt
A center circle on a basketball court has a diameter of 12 feet. What is the area of the circle? (Best Choice)