Circumference

What is the diameter?

• 8
• 16
• 10
• 4

What is the radius?

• 18
• 72
• 38
• 14

What is the diameter of a circle with a radius of 3 feet?

• 9.42 feet
• 18.84 feet
• 6 feet
• 12 feet

What is the radius of a circle with a diameter of 45 miles?

• 22.5 miles
• 141.3 miles
• 282.6 miles
• 90 miles

A minute hand (radius) of a clock is 13.8 meters long. What is the circumference of the clock?

• 86.70 meters
• 76.66 meters
• 66.66 meters
• 96.66 meters

What is the circumference of a circle with a diameter of 56 m?

• 175.8 m
• 176.8 m
• 165.8 m
• 186.8 m

What is the circumference of a circle with a radius of 21 cm?

• 131.88 cm
• 121.99 cm
• 111.89 cm
• 141.89 cm

What is the circumference of a circle with a radius of 33 ft?

• 207.2 ft
• 197.2 ft
• 217.2 ft
• 227.2 ft

A minute hand (radius) of a clock is 22 feet long. What is the circumference of the clock?

• 138.16 feet
• 119.12 feet
• 118.24 feet
• 133.82 feet

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius