9.1-9.2 Quiz

What is the circumference of a circle with a diameter of 19.1 ft? 

• 60.00 ft
• 35.17 ft
• 28.67 ft
• 47.17 ft

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

• 63.585 ft²
• 68.345 ft²
• 64.585 ft²
• 61.345 ft²

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. 

A bicycle tire has a diameter of 27 inches. How far does the bike travel along the ground when the wheel rotates 10 times?

• 847.8 inches

• 84.78 inches

• 847.8 inches²

• 84.78 inches²

A circular race track has a diameter of 1/2 mile. How far does a car travel in one lap around the

track?

• 1 mile

• 0.25 miles

• 1.57 miles

• 15.7 miles

The London Eye has a diameter of 120 meters. If you are sitting in one of the capsules, about how far do you travel in two rotations of the Ferris wheel?

• 180 meters

• ^{380 meters}

• ^{760 meters}

• 360 meters

The circumference of a circle is 18.41 feet.  What is the approximate length of the diameter?

• 3 ft
• 5 ft
• 6 ft
• 8 ft