Math Practice Problems - Circle Circumference

Circle Circumference - Sample Math Practice Problems

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Complexity=4, Mode=exact

Find the circumference in terms of π. Type "pi" in for π so that a correct answer would look like 7pi m.

Circumference:

Complexity=6, Mode=exact

Find the circumference in terms of π. Type "pi" in for π so that a correct answer would look like 7pi m.

Circumference:

Complexity=8, Mode=exact

Find the circumference in terms of π. Type "pi" in for π so that a correct answer would look like 7pi m.

Circumference:

Complexity=4, Mode=fraction

Find the circumference. Use 22/7 as an approximation for π. A correct answer would look like 14.5 cm.

Circumference:

Complexity=4

Find the circumference. Use 3.14 as an approximation for π. A correct answer would look like 4.78 in.

Circumference:

Answers

Complexity=4, Mode=exact

Find the circumference in terms of π. Type "pi" in for π so that a correct answer would look like 7pi m.

#	Problem	Correct Answer	Your Answer
1		Circumference:
Solution Circumference = π × diameter C = πd Since we have that the radius is 2 cm, we multiply it by 2 to get the diameter which then is 4 cm. Plugging values into the equation, we have: C = π(4 cm) C = 4π cm

#	Problem	Correct Answer	Your Answer
2		Circumference:
Solution Circumference = π × diameter C = πd Plugging values into the equation, we have: C = π(4 m) C = 4π m

Complexity=6, Mode=exact

Find the circumference in terms of π. Type "pi" in for π so that a correct answer would look like 7pi m.

#	Problem	Correct Answer	Your Answer
1		Circumference:
Solution Circumference = π × diameter C = πd Since we have that the radius is 2 in, we multiply it by 2 to get the diameter which then is 4 in. Plugging values into the equation, we have: C = π(4 in) C = 4π in

#	Problem	Correct Answer	Your Answer
2		Circumference:
Solution Circumference = π × diameter C = πd Since we have that the radius is 5 cm, we multiply it by 2 to get the diameter which then is 10 cm. Plugging values into the equation, we have: C = π(10 cm) C = 10π cm

Complexity=8, Mode=exact

Find the circumference in terms of π. Type "pi" in for π so that a correct answer would look like 7pi m.

#	Problem	Correct Answer	Your Answer
1		Circumference:
Solution Circumference = π × diameter C = πd Plugging values into the equation, we have: C = π(4 mi) C = 4π mi

#	Problem	Correct Answer	Your Answer
2		Circumference:
Solution Circumference = π × diameter C = πd Plugging values into the equation, we have: C = π(4 mi) C = 4π mi

Complexity=4, Mode=fraction

Find the circumference. Use 22/7 as an approximation for π. A correct answer would look like 14.5 cm.

#	Problem	Correct Answer	Your Answer
1		Circumference:
Solution Circumference = π × diameter C = πd Since we have that the radius is 28 m, we multiply it by 2 to get the diameter which then is 56 m. Plugging values into the equation, we have: C = π(56 m) C = (22/7) × (56 m) C = 176 m

#	Problem	Correct Answer	Your Answer
2		Circumference:
Solution Circumference = π × diameter C = πd Plugging values into the equation, we have: C = π(21 mi) C = (22/7) × (21 mi) C = 66 mi

Complexity=4

Find the circumference. Use 3.14 as an approximation for π. A correct answer would look like 4.78 in.

#	Problem	Correct Answer	Your Answer
1		Circumference:
Solution Circumference = π × diameter C = πd Plugging values into the equation, we have: C = π(4 yd) C = 3.14 × (4 yd) 12.56 yd

#	Problem	Correct Answer	Your Answer
2		Circumference:
Solution Circumference = π × diameter C = πd Since we have that the radius is 3 in, we multiply it by 2 to get the diameter which then is 6 in. Plugging values into the equation, we have: C = π(6 in) C = 3.14 × (6 in) 18.84 in

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