Find the linear speed in miles per hour in which she is traveling. 's car have an 11-inch radius. If the wheels are rotating at a rate of 10. A DVD with a radius of 6 centimeters rotates at a speed of 243 revolutions per minute. Find the linear speed in centimeters per second. 11. A lawnmower blade has a diameter of 30 inches. If the blade rotates at a speed of 126 revolutions per minute, find the linear speed of the tips of the blades in feet per second.

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