Study

Circumference and Area of Circle

  •   0%
  •  0     0     0

  • The commemorative 1988 plate celebrating Mickey Mouse's 60th birthday is 9 inches in diameter. What is the CIRCUMFERENCE of the plate?
    28.26 inches
  • What is the diameter of this circle?
    64 centimeters
  • What is the diameter of a circle?
    It's a line that goes from one edge of a circle through the center of a circle touching the opposite edge.
  • What is the formula for finding the area of a circle?
    Pi (3.14) times radius times radius
  • What is the area of this circle?
    3215.36 square centimeters or 3215.36 cm^2
  • The diameter of a circle is 7.5 miles. What is the unit of measurement when you find the area of the circle?
    square miles or miles^2. (^2 means "to the power of 2.")
  • What is the diameter of a circle with a radius of 3.25 feet?
    6.5 feet
  • The radius of a circle is 130 meters. What is the unit of measurement used for the circumference of this circle?
    meters
  • What's the formula for finding the circumference of a circle?
    Multiply 3.14 times the diameter of the circle
  • Find the circumference of a circle with a diameter of 12 inches.
    37.68 inches
  • The diameter of the window is 5 feet. What is its circumference?
    15.7 feet
  • What is the radius of a circle when the diameter is 18 inches?
    9 inches
  • The commemorative 1988 plate celebrating Mickey Mouse's 60th birthday is 9 inches in diameter. What is the area of the plate?
    63.585 square inches (63.585 in^2)
  • What's the area of a circle with a radius of 5 miles?
    78.5 square miles (78.5 mi^2)
  • The diameter of the window is 5 feet. What is its area?
    19.625 square feet (19.625 ft^2)
  • What do you call this symbol?
    The symbol is the Greek letter, pi.
  • What is the circumference of the circle?
    56.52 inches
  • What is the approximate value often used for pi?
    3.14
  • Where is the circumference of a circle?
    The circumference of a circle is the distance around the circle.
  • The Jeep spare tire cover has a radius of 16 inches. What is the circumference of the cover?
    100.48 inches or approximately 8 feet
  • Pi is equal to the ratio of the ____________ of a circle divided by its ____________.
    CIRCUMFERENCE divided by its DIAMETER