Specific solutions:
Calculated water quantity: 3.14 * 20 * 20 * 80 =100480 (cubic centimeter).
Calculate the volume of the cone iron block: 100480/ 16=6280 (cubic centimeter).
Calculate the base diameter of the cone iron block: 62.8/3. 14=20 (cm).
Calculate the bottom radius of the cone iron block: 20/2= 10 (cm).
Calculate the height of the cone iron block: 6280 * 3/(3.14 *10 *10) = 60 (cm).