Answer:
The diameter of each coin is approximately 2.778 centimeters.
Explanation:
According to the statement, 0.12 cubic meters (
) were used to produce 99000 coins. First, we calculate the volume of each coin (
), measured in cubic meters, by dividing the total volume by the number of coins. That is:


Then, diameter (
), measured in milimeters, can be derived from the following volume formula:
(1)
Where
is the thickness of the coin, measured in milimeters.
If we know that
and
, then the diameter of each coin is:




The diameter of each coin is approximately 2.778 centimeters.