Circle Area and Circumference Quiz

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

What is the circumference of a circle with a radius of 7 units?

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

• 2 units

• 5 units

• 10 units

• 20 units

Calculate the area of a circle with a diameter of 12 units.

What is the circumference of a circle with a diameter of 16 units?

If the radius of a circle is doubled, how does the area change?

• It remains the same

• It doubles

• It triples

• It quadruples

• 3 units

• 6 units

• 9 units

• 12 units

If the radius of a circle is 3 units, what is the diameter?

• 3 units

• 6 units

• 9 units

• 12 units

• 3 units

• 5 units

• 7 units

• 9 units