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About the CoverThe Texas Prairies and Lakes region offers a wide range of attractions. Among them is the State Fair of Texas. Located in Dallas, it boasts the 212-foot Texas Star-the tallest Ferris wheel in North America. As with all circles, the ratio of the circumference of the Texas Star to its diameter is a constant, π. You'll learn more about ratios in Chapter 7 and circumference in Chapter 10. About the Graphics Log InThe resource you requested requires you to enter a username and password below: | |||