The radius of a circle is
  • The measurement from the center of a circle to an edge of the circle.
  • The measurement around the circle
  • The measurement from and edge of the circle to another edge through the center
  • A line perpendicular to the diameter of the circle
The diameter of a circle is:
  • The measurement around the circle.
  • The distance from an edge of a circle to another edge.
  • The distance from the center of the circle to an edge of a circle
  • The distance from an edge of a circle to another edge through the center. 
What is the diameter?
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 9.jpg
  • 8
  • 16
  • 10
  • 4
What is the radius?
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 10.jpg
  • 18
  • 72
  • 38
  • 14
Is the red line a radius or diameter of the circle?
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 11.jpg
  • Radius
  • Diameter
Is the red line a radius or diameter of the circle?
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 12.jpg
  • Radius
  • Diameter
What does "circumference" mean?
  • Space a circle takes up
  • Distance around a circle
  • Line from one side of a circle to another
  • Line from center of circle to side
True or False: An equation for Circumference is C = πr2
  • True 
  • False
Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?
  • 28 cm
  • 43.96 cm
  • 87.96 cm
  • 7 cm
What is the circumference of a circle with a radius of 54 m?
  • 339.12 m
  • 169.56 m
  • 84.78 m 
Determine the radius of the penny
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 13.jpg
  • 59.66 mm
  • 9.5 mm
  • 38 mm
  • 119.32 mm
If my diameter is 19 inches, what is my radius?
  • 38 inches
  • 9.5 inches
  • 59.66 inches
  • 119.32 inches
A circular swimming pool is 21 feet in diameter.How many feet around is the pool?
  • 10.5 ft
  • 42 ft
  • 65.94 ft
  • 131.95 ft
Find the circumference (to the nearest whole number)
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 14.jpg
  • 88 in
  • 44 in
  • 116 square in
  • None of the above
Alex has trained his puppy, Popper, to jump through a ring. According to Alex's measurements and calculations, the ring has a diameter of 3.5 feet. What is the ring's circumference (use 3.14 for pi)?
mt-3 sb-9-Radius, Diameter, Circumferenceimg_no 15.jpg
  • 11.32 ft
  • 12.25 ft
  • 10.99 ft
  • 8.75 ft
Randy’s circular garden has a radius of 1.5 feet. He wants to enclose the garden edging that costs $0.75 per foot. About how much will the edging cost? 
  • $8.00
  • $7.00
  • $3.50
  • $0.50
The homeowners association wants to enclose the playground in a fence. How much fencing will they need to purchase? Is this question finding the area or the circumference?
  • area
  • circumference
  • neither
Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Use π = 3.14.
  • 4 in.
  • 8 in.
  • 12 in.
  • 16 in.
The circumference is 62.8 inches.  What is the radius?
  • 20 inches
  • 10 inches
  • 6.28 inches
  • 31.4 inches
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