It's not chemical because it would have to react to something to change so it is physical change because it is the same thing but it just smells I hope this helped
No I actually took this last year. When milk turns sour it's a chemical change. You can't undo a chemical change as for a physical change it's reversible. Trust me on this one.
To find this, we can simply multiply all three dimensions to get the answer in cubic centimeters, and we get the answer above. If you want to be more specific, we can go by the sigfig rule and the answer would be rounded to 93 cm^3.