Math 5 - Quiz 1

1. What is the area of a circle with a radius of 3 cm?

• 9π cm²
• 6π cm²
• 12 cm²
• 15 cm²

2. If the radius of a circular garden is doubled, what happens to the area of the garden?

• It stays the same.
• It doubles.
• It triples.
• It quadruples.

3. A pizza has a diameter of 12 inches. What is the area of the pizza?

• 36π in²
• 12π in²
• 24π in²
• 18π in²

4. Which of the following correctly describes the area of a circle?

• The total distance around the circle.
• The amount of space inside the circle.
• The length of the diameter multiplied by π.
• The radius divided by two.

5. If a circular table has a radius of 5 feet, what is the area of the table?

• 10π ft²
• 15π ft²
• 25π ft²
• 20 ft²

6. The formula to calculate the area of a circle is A = π r2, where A is the area and r is the radius.

• True
• False

7. To find the area of a circle, you need to multiply the diameter by itself.

• True
• False

8. If the radius of a circle is 3 units, then the area of the circle can be calculated as A = π × 32.

• True
• False

9. The area of a circle increases when the radius is doubled, according to the formula A = π r2.

• True
• False

10. When solving a real-world problem involving a circle, you can use the area formula A = π r2 to determine how much space is inside the circle.

• True
• False