PHYSICS
posted by HELP PLEASE .
Allegra's favorite ride at the BarrelOFun Amusement Park is the Flying Umbrella, which is lifted by a hydraulic jack. The operator activates the ride by applying a forcce of 72 N to a 3.0cmwide cylindrical piston, which holds the 20000. N ride off the ground. What is the diameter of the piston that holds the ride?
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