Lake Mead, near the Hoover Dam, which is the largest man-made lake in the United States,...

Lake Mead, near the Hoover Dam, which is the largest man-made lake in the United States, contains 28,537,000 acre-foot of water (an acre-foot is the amount of water required to cover 1 acre to a depth of 1 foot). Express the mass of the water volume in kg and lb_m.