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You may not be thinking about math as you take a spin around the track, but math is all around you! The formula C = πd describes the relationship between the diameter of the tires and their circumference. Even the rate (or speed) that you travel can be described by the <a onClick="'/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078883261/589238/About_cover_Course1.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a> You will learn more about ratios in Chapter 6 and circumference in Chapter 10.

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