3/22- Quizizz- Circles, A&C

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

What is a straight line that goes through the center of a circle from side to opposite side?

• Diameter

• Circumference

• Radius

• Center

What is the measurement around the outside of a circle called?

• Diameter

• Circumference

• Radius

• Center

What is the formula for AREA of a circle?

What is the area of a circle with a diameter of 10 cm? Use 3 for pi and choose the answer that is the closest.

• 31.4 cm²

• 78.5 cm²

• 15.7 cm²

• 314 cm²

A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 50.27 m²

Ms. Catall is using a compass to find her way out of the woods. The compass has a radius of 4 centimeters. What is the compass's area?

• 49.2 cm²
• 45.6 cm²
• 50.24 cm²
• 55.9 cm²

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

Wrapping ribbon around a vase.

• Area
• Circumference