Test: Area of a Circle, Volume of a Cylinder, Cone, Sphere

What is the formula for finding the area of a circle?

• A = π·d

• C = 2·π·r

• A = π·r²

• C = π·d

What does A represent in the formula:

A = π·r²

• Area

• Radius

• Pi

• Diameter

What does r represent in the formula:

A = π·r²

• circumference

• radius

• diameter

• squared

What number does π represent?

• 4.13

• 3.41

• pie

• 3.14

What is the radius of a circle?

• halfway through a circle

• a line through the center of a circle

• the amount of space inside of the circle

• the distance around a circle

What is the area of a circle?

• halfway through a circle

• a line through the center of a circle

• the amount of space inside of the circle

• the distance around a circle

Find the area of the circle.

• 18.84 m²

• 113.04 m²

• 37.68 m²

• 452.16 m²

Find the area of the circle.

• 803.84 cm²

• 25.12 cm²

• 50.24 cm²

• 200.96 cm²

Find the area of the circle.

• 176.6 cm²

• 706.5 cm²

• 23.6 cm²

• 50.24 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