Area and Circumference of a Circle Slides

Which best represents the circumference of a circle with a radius of 12 inches?

• 37.68 inches

• 75.36 inches

• 62.14 inches

• 27.14 inches

Which best represents the area of a circle with a radius of 8 inches?

• 200.96 inches

• 50.24 inches

• 192.14 inches

• 31.4 inches

• 19 units

• 13 units

• 36 units

• 18 units

The most popular size pizza at Pizza Parlor is a large pizza with a 12-inch radius. Which of the following best represents the circumference of this pizza?

• 62.84 inches

• 60 inches

• 75.36 inches

• 452.16 inches

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

• 20ft
• 5ft
• 31.4ft
• 62.8ft

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?

• 31.25 m²
• 29.55 m²
• 30.36 m²
• 28.26 m²

Does 7 inches represent the diameter or radius of the circle?

• Diameter

• Radius

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

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?

• 11.32 ft

• 12.25 ft

• 10.99 ft

• 8.75 ft

What is the area of this circle?

• 163.24 cm²

• 15.32 cm²

• 124.24 cm²

• 113.04 cm²