Circle Basics

What is the radius of a circle if its diameter is 10 cm?

If the radius of a circle is 8 cm, what is its diameter?

Calculate the circumference of a circle with a radius of 7 cm. Use $$\pi \approx 3.14$$ .

What is the area of a circle with a diameter of 14 cm? Use $$\pi \approx 3.14$$ .

The circumference of a circle is 62.8 cm. What is the radius? Use $$\pi \approx 3.14$$ .

If the area of a circle is 78.5 cm $$^2$$ , what is the radius? Use $$\pi \approx 3.14$$ .

What is the diameter of a circle whose circumference is approximately 31.4 cm? Use $$\pi \approx 3.14$$ .

Calculate the area of a circle with a radius of 3 cm. Use $$\pi \approx 3.14$$ .

A circle has a diameter of 22 cm. What is its radius?

What is the circumference of a circle with a diameter of 20 cm? Use $$\pi \approx 3.14$$ .