Elementary Geometry for College Students
6th Edition
ISBN:9781285195698
Author:Daniel C. Alexander, Geralyn M. Koeberlein
Publisher:Daniel C. Alexander, Geralyn M. Koeberlein
Chapter8: Areas Of Polygons And Circles
Section8.4: Cicumference And Area Of A Cicle
Problem 45E: The diameter of a carousel merry-go-round is 30ft. At full speed, it makes a complete revolution in...
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A ladder 15 feet long is leaning against a house. The base of the ladder is pulled away from the wall at a rate of 4ft/sec. How fast is the top of the ladder moving down the wall when its base is 9 feet from the wall?
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