Area of an Annulus Worksheet

Calculate the area of an annulus given the radii of the inner and outer circles. Includes multiple choice, fill-in-the-blanks, and short answer questions.

Grade 10 Math GeometryArea of an Annulus

Use This Worksheet

Includes

2 Short AnswerFill in the BlanksMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.7.G.B.4CCSS.MATH.CONTENT.HSG.GMD.A.3

Topics

mathgeometryannulusareacirclesgrade-10

7 sections · Free to use · Printable

← More Math worksheets for Grade 10

Area of an Annulus

Name:

Date:

Score:

Read each question carefully and answer to the best of your ability. Show all your work for short answer questions.

1. Draw an annulus and label its inner radius (r) and outer radius (R).

2. The formula for the area of an annulus is A = , where R is the radius and r is the radius.

3. What is the area of an annulus with an outer radius of 10 cm and an inner radius of 6 cm? (Use π ≈ 3.14)

125.6 cm²

200.96 cm²

314 cm²

628 cm²

4. If the area of an annulus is 75.36 cm² and its inner radius is 4 cm, what is the outer radius? (Use π ≈ 3.14)

5 cm

6 cm

7 cm

8 cm

5. A circular garden has a fountain in the center. The garden has a radius of 15 meters, and the fountain has a radius of 3 meters. What is the area of the garden available for planting flowers? (Leave your answer in terms of π)

6. An annulus is formed by two concentric circles.

True

False