A rectangular swimming pool is 10.0 m wide and 15.0 m long. The water depth varies over the length of the pool in three 5.0 m zones. The zone under the diving board is 3.0 m deep. The shallow zone at the other end is 1.0 m deep. The zone in the middle has a sloping bottom changing from 3.0 m to 1.0 m deep

A. What is the volume of the pool in cubic meters?
B. What is the volume of the pool in liters?
C. The density water at pool temperature is 1.0 g / cm³. What is the mass, in kilograms, of the entire volume of water in the pool?
D. If a swimmer is allotted 5.0 m² of surface swimming space, how many swimmers may be in the pool at one time?