# Ch 8: Big Ideas Math Common Core 7th Grade Chapter 8: Circles

### About This Chapter

## How It Works:

- Identify the lessons in the Big Ideas Math Circles chapter with which you need help.
- Find the corresponding video lessons within this companion course chapter.
- Watch fun videos that cover the circle topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

## Chapter Topics

You'll learn all of the math topics covered in the textbook chapter, including:

- Area and circumference of a circle
- Perimeter, area and volume of combined
- Area of complex figures

*Big Ideas Math is a registered trademark of Larson Texts, Inc., which is not affiliated with Study.com.*

### 1. Circles: Area and Circumference

Like all geometric shapes, circles take up space and a formula is required to calculate the area. Learn about the area and circumference of circles, explore the formula to calculate a circle's area, and review examples that use the diameter and others that use the circumference to find the area of a circle.

### 2. Combined Figures: Perimeter, Area, and Volume

Combined figures are shapes that are composed of a combination of simpler shapes. Explore how to find the perimeter, area, and volume of a combined figure.

### 3. Area of Complex Figures

The area of complex figures can be calculated by separating them into rectangles, triangles, and other shapes. Learn how to find the area of complex figures by reviewing basic shapes, complex shapes, and parts of shapes.

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### Other Chapters

Other chapters within the Big Ideas Math Common Core 7th Grade: Online Textbook Help course

- Big Ideas Math Common Core 7th Grade Chapter 1: Integers
- Big Ideas Math Common Core 7th Grade Chapter 2: Rational Numbers
- Big Ideas Math Common Core 7th Grade Chapter 3: Expressions and Equations
- Big Ideas Math Common Core 7th Grade Chapter 4: Inequalities
- Big Ideas Math Common Core 7th Grade Chapter 5: Ratios and Proportions
- Big Ideas Math Common Core 7th Grade Chapter 6: Percents
- Big Ideas Math Common Core 7th Grade Chapter 7: Construction and Scale Drawings
- Big Ideas Math Common Core 7th Grade Chapter 9: Surface Area & Volume
- Big Ideas Math Common Core 7th Grade Chapter 10: Probability & Statistics