Find optimal solutions, using numerical approaches

Find optimal solutions, using numerical approaches

1. Phil's Pool Pondering - calculate volume of water to fill trapazoidal pool safely
2. Phil's Pool Pondering - calculate volume of water to fill trapazoidal pool safely
3. Phil's Pool Pondering - calculate volume of water to fill pool safely
4. Phil's Pool Pondering - calculate maximum capacity of hexagonal play pool
5. Contained in the Circus - calculate dimensions of rectangle to give largest area given perimeter
6. A Fair Cow 1 - calculate sell price