2. A 20-ft-by-30-ft swimming pool is filled with water. The depth is measured at 5-ft intervals, starting at one corner of the pool, and the values are recorded in the table. Estimate the volume of water in the pool. (10pts) 0 5 10 15 20 25 30 0 2 3 4 6 7 8 8 5 2 3 4 7 8 10 8 10 2 4 6 8 10 12 10 O 15 2 3 4 5 6 8 7 20 2 2 2 2 3 4 4