body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

6. Circles and Arcs

Continue to next subchapter

Exercise 27 Page 654

Let's recall the formula for finding a circumference.

14π in.

Practice makes perfect

We are given the following diagram and we want to find its circumference.

The circumference C of a circle with diameter d is calculated using the formula below. C=π d From the diagram, we know that the diameter of the circle is 14inches. By substituting 14 for d in the formula, we can calculate C.

C=π d

d= 14

C=π( 14)

CommutativePropMult

Commutative Property of Multiplication

C=14π

The circumference of the circle is 14π in.

Subchapter links

Lesson Check p.654

Practice and Problem-Solving Exercises p.654-657

Standardized Test Prep p.657

Mixed Review p.657