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Circumference
Test Description: Find radius, diameter,and circumference of circles using 3 for pi
Instructions: Answer all questions to get your test result.
1) What is the circumference of a tire with a diameter of 12 inches?
A
6
B
48
C
36
D
24
2) What is the radius of a circle with a diameter of 20 inches?
A
30
B
60
C
10
D
40
3) What is the circumference of a circle with a radius of 12?
A
6
B
72
C
36
D
24
4) What is the circumference of a circle with a radius of 7 feet?
A
42
B
14
C
28
D
3.5
5) What is the radius of a circle with a diameter of 36 inches?
A
12
B
16
C
18
D
6
6) What is the circumference of a circle with a diameter of 30 centimeters?
A
90
B
50
C
60
D
15
7) Is the diameter of a tire less than, greater than, or equal to its circumference?
A
less than
B
greater than
C
equal
D
not enough information
8) What is the diameter of a tire with a radius of 11 inches?
A
22
B
121
C
5.5
D
33
9) Your favorite CD has a radius of 9 centimeters. What is the circumference of the CD?
A
54
B
4.5
C
27
D
18
10) Which is true about the radius and diameter?
A
The radius is two times the size of the diameter.
B
The diameter is half the size of the radius.
C
The radius and diameter can sometimes be equal.
D
The diameter is two times the size of the radius.
*select an answer for all questions
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