He edited his post and added that attempt a little after. It clearly says it was edited.
Just stop talking.
Do you have to use a formula or is this just a logic problem? and is there anything to do with pressure? DIAGRAM TIME!
You have to use Bernoulli's equation which is:
P1+.5
PV^2+
Pgh=P2+.5
PV^2+
Pgh
Where
P is ro which stands for destiny, which is 1000Kg/m^3, and where P1 and P2 are equal and cancel out, along with the
Ps. Also
v, flow rate, is equal to
PA(rea of hole)V(elocity)T(ime)