more homework

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Pool Size

The number of Tilapia that we want is 105, assuming we will eat half and sell half. Adding 10% mortality we will buy 115 fish. We will stock with five gallons of water per fish. This is more crowded than a pond environment to keep the males from becoming territorial. Also, the height of the pool has to be no less than thirty inches, the best being more than three feet high. 115 times 5 is 575, so we will need 575 gallons of water. Since roughly seven and a half gallons fit in one cubic foot, the pool has to be approximately 80 cubic feet in volume. Since we want the pool to be cylindrical, and we have put the height at three feet, the diameter has to be nine feet.