Area of Circles

What is the area of a circle with a radius of 5 units? (Use π = 3.14)

• 10.5 square units

• 15.7 square units

• 25 square units

• 78.5 square units

If the diameter of a circle is 12 cm, what is its area? (Use π = 3.14)

• 24.56 cm^2

• 36.68 cm^2

• 45.78 cm^2

• 113.04 cm^2

Find the area of a circle with a radius of 8 meters. (Use π = 3.14)

• 200.96 square meters

• 128 square meters

• 50.24 square meters

• 16.28 square meters

A circle has a circumference of 31.4 cm. What is its area? (Use π = 3.14)

• 49.0 cm²

• 7.85 cm²

• 15.7 cm²

• 62.8 cm²

Calculate the area of a semi-circle with a radius of 6 units. (Use π = 3.14)

• 12.56 square units

• 36.78 square units

• 20.12 square units

• 56.52 square units

The diameter of a semi-circle is 14 cm. What is its area? (Use π = 3.14)

• 28 cm²

• 10.5 cm²

• 42 cm²

• 77 cm²

Find the area of a semi-circle with a radius of 10 meters. (Use π = 3.14)

• 50

• 157

• 31.4

• 100

What is the area of a quarter circle with a radius of 4 units? (Use π = 3.14)

• 8.42 square units

• 6.30 square units

• 16.28 square units

• 12.56 square units

If the diameter of a quarter circle is 16 cm, what is its area? (Use π = 3.14)

• 25.12 cm²

• 100.48 cm²

• 75.36 cm²

• 50.24 cm²

Calculate the area of a quarter circle with a radius of 12 meters. (Use π = 3.14)

• 144 square meters

• 113.04 square meters

• 75.36 square meters

• 24.68 square meters