8 ball pool, 7 solid, 7 stripes the 8ball and the cue ball. So 16.
There is no game of pool practice, so there are no red balls. The 3 and 11 balls are red in the game of pool however.
13
7, The 9 - 15 balls are striped.
There are seven striped balls in billiards.
Depending upon the game, there are from 7 to 21 colored balls.
15 in a regular game
In 1887, the rules were changed from 7 balls needed for a walk to 5 balls needed for a walk. In 1889, the rules were changed again to 4 balls needed for a walk and have stayed that way since.
Pool balls are made of a phenolic resin. This comes from a mix of phenol and aldehyde.
The number of balls depends upon the game. All balls use a cue ball plus 7, 9, 15, or 21 numbered balls.
Cannot be answered with only these measurements. For a rectangular pool, the length, width and depth are needed. For a round pool, the diameter and depth are needed.
Friction. The movement of the rolling pool balls does no damage to the pool felt. However, the pool balls accumulate pool chalk that is very abrasive. The pool chalk accumulated on the balls and dropping on to the felt both result in tearing of the felt fibers as balls are struck or slide on the table. Occasionally balls bounce or are jumped on the table, resulting in even more damage. Damaged felt is a part of playing pool.
Cannot be answered with only these measurements. For a rectangular pool, the length, width and depth are needed. For a round pool, the diameter and depth are needed.