Glen Canyon Dam Is A Concrete Arch 300 Ft Wide At The Base Elevation 3132 0 Ft And 1 3761875

Glen Canyon Dam is a concrete arch 300 ft wide at the base (elevation 3132.0 ft) and 1560 ft wide at the crest, just above the maximum water level (elevation 3711.0 ft). Assume the dam base spans 30° and that the dam crest spans 90°. Assuming the dam is symmetrical, find the magnitude and location of the horizontal component of the hydrostatic resultant force when the reservoir, called Lake Powell, is full. Report magnitude in tons, and location as an elevation.