# HOCKEY PUCK MATH: For Radius, Diameter, Area, Circumference, and Volume

June 27, 2010

**OPENING STATEMENT **

I’m a journalism student in college, and math is one of the requirements for not only graduation, but also to help me transfer to a four-year school. There are going to be some situations coming my way involving math, so I had better learn about it now.

Math is all around us, especially in sports. I’m a sports fan, and I especially enjoy watching hockey. I’m curious about how a hockey puck is measured in advanced mathematical terms (Volume, Area and Circumference).

Face it, very few people like math. Math is almost everybody's least-favorite subject in school and in life. But math is all around us.

With this illustrative piece, you will first learn how a puck is measured in area and circumference . Second, you will learn how to measure the diameter , so you will know how to determine the radius . Lastly, you will measure the puck by its volume .

**KNOWING ITS RADIUS BY KNOWING THE DIAMETER **

The diameter of a hockey puck is *three inches* (stickshack website). You divide the diameter of three inches by two, and you get a radius of 1.5 inches .

**KNOWING THE FORMULA FOR AREA AND CIRCUMFERENCE **

In the book *Elementary Algebra for College Students* , Allen R. Angel discusses the formula for area and circumference, which you can use to measure a hockey puck (144).

**Area = **

** **

**r ^{ (squared)} Circumference = 2 **

** r **

Keep in mind that

** = 3.14**

**KNOWING HOW TO MEASURE THE PUCK BY VOLUME **

In the same math textbook, Allen talks about the **formula** for **right circular cylinder** , which is used to measure volume (145). And you use that formula to measure the volume of the hockey puck.

**Volume = **

** r h **

<*http://www.stickshack.com/Hockey-Pucks.htm* >* *

Angel, Allen R. – Elementary Algebra for College Students – 7^{th} Edition

New York, et. Al – Custom Publishing, 2010. Chapter 2 (Pages 144).

^{th}Edition

New York, et. Al – Custom Publishing, 2010. Chapter 2 (Pages 145).

For a visual illustration via PowerPoint slideshow, click on this link

http://www.4shared.com/document/4IMmBalc/Hockey_Puck_Math.html