Working from the information provided in the question, it could be any number at all.
39
3
nine
None of the graphs that I can see!
Imagine 4squared (16) divided by 4 (4). Therefore units squared divided by units would be units.
201
39
7 squared and 3 squared. 49 - 9 = 40
3
well if you doubled the coils it would be pie times the amount of voltage in the current squared
64 - 25 = 39
the new area will be fourfold, not doubled. try it on squared paper and see how the shape increases from one square into four...
nine
1
its an exponent it means squared or doubled because its a 2
None of the graphs that I can see!
Imagine 4squared (16) divided by 4 (4). Therefore units squared divided by units would be units.