8. An oscillating fan has blades that measure 8 inches long. If the fan rotates at a speed of 9 revolutions per second, find the linear speed of the ends of the blades in miles per hour. 9. The wheels on Darlene's car have an 11-inch radius. If the wheels are rotating at a rate of 378 rpm, find the linear speed in miles per hour in which she is traveling. 10. A DVD with a radius of 6 centimeters rotates at a speed of 243 revolutions per minute. Find in centimeters per second.

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