Mastering Circle Formulas: Area and Circumference Quest

A circular garden has a radius of 5 meters. What is the circumference of the garden? (Use the formula C = 2πr)

• 10π meters

• 10 meters

• 25π meters

• 15 meters

Tags

CCSS.7.G.B.4

If the area of a circular pond is 78.5 square meters, what is the radius of the pond? (Use the formula A = πr²)

• 10 meters

• 3 meters

• 5 meters

• 7 meters

Tags

CCSS.7.G.B.4

A pizza has a diameter of 12 inches. What is the area of the pizza? (Use the formula A = πr²)

• 24π square inches

• 48π square inches

• 18π square inches

• 36π square inches

Tags

CCSS.7.G.B.4

A circular track has a circumference of 400 meters. What is the radius of the track? (Use the formula C = 2πr)

• 100 meters

• 80 meters

• 50 meters

• 63.66 meters

Tags

CCSS.7.G.B.4

If a circular swimming pool has a radius of 7 feet, what is the area of the pool? (Use the formula A = πr²)

• 21π square feet

• 14π square feet

• 28π square feet

• 49π square feet

Tags

CCSS.7.G.B.4

A round table has a diameter of 1.5 meters. What is the circumference of the table? (Use the formula C = πd)

• 4.71 meters

• 5.00 meters

• 6.28 meters

• 3.14 meters

Tags

CCSS.7.G.B.4

The area of a circular flower bed is 50.24 square feet. What is the diameter of the flower bed? (Use the formula A = πr²)

• 12.5 feet

• 8.0 feet

• 10.0 feet

• 6.0 feet

Tags

CCSS.7.G.B.4

A circular clock has a radius of 10 cm. What is the circumference of the clock? (Use the formula C = 2πr)

• 31.4 cm

• 50.3 cm

• 78.5 cm

• 62.8 cm

Tags

CCSS.7.G.B.4

If the circumference of a circular track is 314 meters, what is the area of the track? (First find the radius using C = 2πr, then use A = πr²)

• 5000 square meters

• 1570 square meters

• 7850 square meters

• 1000 square meters

Tags

CCSS.7.G.B.4

A circular fountain has an area of 113.1 square meters. What is the circumference of the fountain? (First find the radius using A = πr², then use C = 2πr)

• 45.0 meters

• 25.4 meters

• 30.2 meters

• 37.7 meters

Tags

CCSS.7.G.B.4