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

• Radius
• Diameter

What is the area of this circle? Use the Pi button.

• 452.39 cm²

• 139.12 cm²

• 113.1 cm²

• 84.23 cm²

What is circumference?

• The distance around a circle.
• The space inside the circle.
• A line from side to side passing through the center.
• A line from the center to the side.

What is the area of a circle?

• The distance around a circle.
• The space inside the circle.
• A line from side to side passing through the center.
• A line from the center to the side.

The homeowners association wants to enclose the playground in a fence. How much fencing will they need to purchase?

Would you need to find the Area or Circumference?

• area

• circumference

• neither

What is the radius of this circle?

• 18
• 36
• 9
• 8

Steven purchases a bowl. The diameter of the

bowl is 14 cm. What is the distance around the bowl? Use the Pi button.

• 21.98 cm

• 43.98 cm

• 87.96 cm

• 7 cm

What is the formula for area of a circle?

• A = π×r²
• A = 2×π×r

Which of the following is the most accurate definition of π ?

• The ratio of the circumference of any circle to its diameter.

• It is exactly 3.14

• It is exactly 3.1415

• It is exactly 3.141593

What is the area of the shaded region? Round to the nearest hundredth.

• 1.26

• 452.39

• 9.42

• 113.10