Respuesta :
The answer is; 1500 years
It is important to note the following about the SI units;
10 millimeter = 1 centimeter
Therefore 225 centimeters = 2250 millimeters
If it takes I year for the mountain to rise 1.5 millimeters then it will take;
2250/1.5 = 1500 years to rise to 225 centimeters