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Circles-Area, Circumference, and more

Quiz by Charemon Jenkins

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14 questions
Show answers
  • Q1
    What is the formula for area of a circle?
    Area=πd
    Area=πr
    Area=2πr
    Area = πr^2
    30s
  • Q2
    What is the formula for circumference of a circle?
    C=π
    C=2πd
    C= πd
    C=πr^2
    30s
  • Q3
    The diameter of a basketball is 12 inches. What is its circumference?
    32.96 inches
    37.68 inches
    121π inches
    36π inches
    30s
  • Q4
    A coin has a radius of 2 cm. What is its area? (Use 3.14 for pi)
    4 sq. cm
    10.42 sq. cm
    6.28 sq. cm
    12.54 sq. cm.
    30s
  • Q5
    Captain America's shield has a radius of 1 yard. What is the circumference of his shield. (Use 3.14 for pi)
    3.14 yards
    6.28 yards
    7.32 yards
    5.26 yards
    30s
  • Q6
    What is the area of a semicircle if its radius is 3 units?
    14.13 sq. units
    28.26 sq. units
    9.42 sq. units
    18.84 sq. units
    30s
  • Q7
    Can a soccer ball with a radius of 6 inches be kicked into a trashcan with a circumference of 15π inches?
    I don't know.
    No, it is too big.
    Yes, it will be equal.
    Yes, the ball is smaller.
    30s
  • Q8
    Which expression is used to determine the area of a circle?
    π × d
    2 × π × r
    π × r × r
    30s
  • Q9
    The radius of a circle is 6. What is the circle's diameter?
    12
    3
    6
    36
    30s
  • Q10
    If the radius is 6.25, what is the area rounded to the nearest whole number?
    13
    39
    123
    20
    30s
  • Q11
    If the radius is 7 inches, what is the circumference of a circle?
    196π inches
    14π inches
    49π inches
    7π inches
    30s
  • Q12
    What is the area of a circle that has a diameter of 10?
    10π
    100π
    25π
    20π
    30s
  • Q13
    A circle has a diameter of 20. What is the area to the nearest tenth?
    31.4
    62.8
    314.2
    125.7
    30s
  • Q14
    What is the circumference of a circle with a diameter of 18, to the nearest tenth?
    254.5
    113.1
    28.3
    56.5
    30s

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