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.
Includes
Standards
Topics
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
Related Worksheets
Scaled Copies in Geometry
Explore the properties of scaled copies, including scale factors, corresponding angles, and side lengths. This worksheet is designed for Grade 10 Geometry students.
Heron's Formula Worksheet - Grade 10
Calculate the area of triangles using Heron's Formula with this comprehensive Grade 10 math worksheet.
Hexaflexagon Exploration
Explore the fascinating world of hexaflexagons, their construction, properties, and mathematical principles.
Slicing 3D Figures Worksheet
Explore cross-sections of various 3D geometric figures, including prisms, pyramids, cylinders, and cones, with this Grade 10 math worksheet.
Parts of a Circle Worksheet
Identify and define the various parts of a circle, including radius, diameter, chord, secant, tangent, arc, and sector.
Grade 10 Geometry: Secants
A Grade 10 math worksheet focusing on understanding and applying properties of secants in circles.
Similar Polygons Worksheet
A Grade 10 Math worksheet covering similar polygons, including identifying corresponding sides and angles, and calculating missing side lengths.
Equation of a Circle Worksheet
Practice identifying, writing, and graphing the equation of a circle in standard form.