Mastering Circle Area Concepts

What is the area of a circle with a radius of 5 cm?

• 31.4 cm²

• 50 cm²

• 78.5 cm²

• 100 cm²

If the diameter of a circle is 10 m, what is its radius?

• 3 m

• 10 m

• 5 m

• 7 m

Calculate the area of a circle using π = 3.14 for a radius of 7 inches.

• 154.00 square inches

• 150.00 square inches

• 153.86 square inches

• 160.00 square inches

Convert the area of a circle from square meters to square centimeters if the area is 50 m².

• 500000 cm²

• 5 cm²

• 50000 cm²

• 5000 cm²

A circle has a radius of 4.5 feet. What is its area?

• 63.617 square feet

• 50.27 square feet

• 28.26 square feet

• 78.54 square feet

If the diameter of a circle is 12 cm, what is the area?

• 36π cm²

• 24π cm²

• 36 cm

• 48 cm²

Using π = 3.14, find the area of a circle with a radius of 3.2 m.

• 40.84 m²

• 18.56 m²

• 25.12 m²

• 32.19 m²

A circular garden has a radius of 6 m. How much area does it cover?

• 150 square meters

• 113.1 square meters

• 94.2 square meters

• 78.5 square meters

If the area of a circle is 78.5 cm², what is its radius?

• 4 cm

• 6 cm

• 7 cm

• 5 cm

Convert 100 square inches to square feet.

• 0.5 square feet

• 1.25 square feet

• 0.8333 square feet

• 0.6944 square feet