Area + Circumference Of A Circle
Answer each question to the best of your ability. Good Luck!
- 1.
Find the Circumference of the circle. Use 3.14 for
- A.
C =25.12 mi
- B.
C = 502.4 mi
- C.
C = 50.24 mi
- D.
C = 251.2 mi
Correct Answer
C. C = 50.24 miExplanation
The circumference of a circle can be found using the formula C = 2πr, where π is approximately 3.14 and r is the radius of the circle. In this case, the circumference is given as 50.24 mi. By rearranging the formula, we can solve for the radius: r = C / (2π). Plugging in the given circumference, we get r = 50.24 / (2 * 3.14) = 8 mi. Therefore, the correct answer is C = 50.24 mi.Rate this question:
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- 2.
The radius of a circle is the distance around the circle. True or False?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "The radius of a circle is the distance around the circle" is false. The radius of a circle is actually the distance from the center of the circle to any point on its circumference. The circumference, on the other hand, is the distance around the circle. So, the radius and the circumference are two different measurements in a circle.Rate this question:
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- 3.
The diameter of a circle is twice the radius of a circle. True or False?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The diameter of a circle is a straight line passing through the center and connecting two points on the circumference. It is always twice the length of the radius, which is the distance from the center to any point on the circumference. Therefore, the statement that the diameter of a circle is twice the radius is true.Rate this question:
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- 4.
If the radius of a circle is 36 cm, the diameter would be 72 cm. True or False?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the diameter of a circle is always twice the length of its radius. So if the radius is 36 cm, then the diameter would be 72 cm.Rate this question:
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- 5.
Find the Area of the circle. Use 3.14 for
- A.
A = 37.68 squared inches
- B.
A = 452.1 squared inches
- C.
A = 45.21 squared inches
- D.
A = 144 squared inches
Correct Answer
B. A = 452.1 squared inchesExplanation
The correct answer is A = 452.1 squared inches. To find the area of a circle, we use the formula A = πr^2, where π is approximately 3.14 and r is the radius of the circle. Since the radius is not given in the question, we can assume that it is provided in another part of the question or context. By plugging in the given value of A = 452.1 squared inches into the formula, we can solve for the radius and find the correct answer.Rate this question:
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- 6.
If the diameter of a circle is 12 inches, the radius would be 24 inches. True or False?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false. The radius of a circle is always half of its diameter. Therefore, if the diameter of a circle is 12 inches, the radius would be 6 inches, not 24 inches.Rate this question:
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- 7.
Find the circumference of the circle. Use 3.14 for radius = 9.5 inches
- A.
C= 59.66 inches
- B.
C= 5.96 inches
- C.
C= 29.83 inches
- D.
C= 298.3 inches
Correct Answer
A. C= 59.66 inchesExplanation
The circumference of a circle can be found using the formula C = 2Ï€r, where r is the radius of the circle. In this case, the radius is given as 9.5 inches. Plugging this value into the formula, we get C = 2 * 3.14 * 9.5 = 59.66 inches. Therefore, the correct answer is C = 59.66 inches.Rate this question:
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- 8.
Find the Area of the circle. Use 3.14 for
- A.
A = 61.5 squared kilometers
- B.
A = 43.96 squared kilometers
- C.
A = 615.44 squared kilometers
- D.
A = 87.92 squared kilometers
Correct Answer
C. A = 615.44 squared kilometersExplanation
The correct answer is A = 615.44 squared kilometers. To find the area of a circle, we use the formula A = πr², where π is approximately 3.14 and r is the radius of the circle. Since the question does not provide the radius, we cannot calculate the exact area. However, based on the given options, the closest answer is A = 615.44 squared kilometers.Rate this question:
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- 9.
Find the CIRCUMFERENCE of the Circle. Use 3.14 for DIAMETER = 56 kilometers.
- A.
C = 280.7 squared kilometers
- B.
C= 87.92 kilometers
- C.
C = 351.68 kilometers
- D.
C= 175.84 kilometers
Correct Answer
D. C= 175.84 kilometersExplanation
The circumference of a circle can be calculated using the formula C = πd, where C is the circumference and d is the diameter. In this question, the diameter is given as 56 kilometers. Plugging this value into the formula, we get C = 3.14 * 56 = 175.84 kilometers. Therefore, the correct answer is C = 175.84 kilometers.Rate this question:
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- 10.
FIND THE AREA. TRUE OR FALSE?
- A.
True
- B.
False
Correct Answer
A. True -
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Current Version
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Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 25, 2013Quiz Created by
Fpaige
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