Solved: Building Design The cross section of a precast concrete beam for a building is
Chapter 8, Problem 85(choose chapter or problem)
Building Design The cross section of a precast concrete beam for a building is bounded by the graphs of the equations and where and are measured in feet. The length of the beam is 20 feet (see figure). (a) Find the volume and the weight of the beam. Assume the concrete weighs 148 pounds per cubic foot. (b) Then find the centroid of a cross section of the beam.
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