Choosing Circumference or Area

What is the distance around a circle?

• Circumference
• Area
• Diameter
• Radius

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. 

What is the radius of this circle?

• 18
• 36
• 9
• 6

What is the area of a circle with a diameter of 10 cm ?

• 31.4 cm²
• 78.5 cm²
• 15.7 cm²
• 314 cm²

Marisa purchases a pot for her father's garden. The diameter of the bottom of the pot is 18 cm. What is the area of the pot's bottom? (Round to the nearest whole number.)

• 28 cm²
• 57 cm²
• 254 cm²
• 1017 cm²

What is the formula for area of a circle given the radius?

• A = πr
• A = 2πr
• A = πd
• A = πr²

What is the formula for circumference of a circle given the radius?

• C = πr
• C = 2πr
• C = πd
• C = πr²

What is the area of a circle with a diameter of 10 cm ?

• 31.4 cm²
• 78.5 cm²
• 15.7 cm²
• 314 cm²

What is the diameter of this circle?

• 3.5
• 6.5
• 6
• 7

What is the formula for circumference of a circle given the diameter?

• C = π(1/2 d)²
• C = 2πr
• C = πd
• C = πr²