Circumference of Circles

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Find the circumference (to the nearest whole number)

• 88 in
• 44 in
• 116 square in
• None of the above

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2
• 9.42 cm2
• unicorns are awsome
• 45.3 cm2

What is the circumference of a 12-inch pizza?

• 37.68 inches
• 18.84 inches
• 113.04 inches
• 432.16 inches

The diameter of a circle painted by Micheal is 12ft. What is the length of the radius?

• 9ft

• 6ft

• 22ft

• 24ft

What number represents π?

• 31.4

• 4.13

• 3.14

• 34.1

The definition of radius is

• distance from one point to another point

• distance around the circle

• distance from the center to any point on the circle

• distance across the circle through the center

The definition of diameter is

• distance from the center of any point on the circle

• distance across the circle through the center

• distance from one point to another

• distance around the circle

The definition of circumference is

• distance from the center of any point on the circle

• distance from one point to another

• distance around the circle

• distance from the center of any point on the circle