Calculating Circle Areas: Radius and Diameter Skills

A circular garden has a radius of 4 meters. What is the area of the garden? (Use the formula A = πr²)

• 16π square meters

• 8π square meters

• 12π square meters

• 20π square meters

The diameter of a round table is 6 feet. What is the area of the table? (Use the formula A = πr²)

• 18.84 square feet

• 37.68 square feet

• 28.27 square feet

• 12.56 square feet

A pizza has a radius of 10 inches. How much area does the pizza cover? (Use the formula A = πr²)

• 50π square inches

• 100π square inches

• 200π square inches

• 75π square inches

A circular swimming pool has a diameter of 12 feet. What is the area of the pool? (Use the formula A = πr²)

• 24π square feet

• 36π square feet

• 48π square feet

• 18π square feet

A circular track has a radius of 5 meters. What is the area of the track? (Use the formula A = πr²)

• 20π square meters

• 30π square meters

• 15π square meters

• 25π square meters

The diameter of a hula hoop is 3 feet. What is the area of the hula hoop? (Use the formula A = πr²)

• Approximately 7.07 square feet

• Approximately 9.42 square feet

• Approximately 3.14 square feet

• Approximately 12.57 square feet

A circular clock has a radius of 2 inches. What is the area of the clock? (Use the formula A = πr²)

• 8π square inches

• 2π square inches

• π square inches

• 4π square inches

A round rug has a diameter of 8 feet. What is the area of the rug? (Use the formula A = πr²)

• 4π square feet

• 8π square feet

• 16π square feet

• 32π square feet

A circular pond has a radius of 7 meters. What is the area of the pond? (Use the formula A = πr²)

• 21π square meters

• 14π square meters

• 49π square meters

• 28π square meters

A circular cake has a diameter of 10 inches. What is the area of the cake? (Use the formula A = πr²)

• 30π square inches

• 20π square inches

• 15π square inches

• 25π square inches