Question

How can I solve:
A*(dH(t)/dt)+((Pi*D^2)/4)*sqrt(2gH(t))=0 ?

Being H(t=0)=Hsub0 , the answer should be

H(t)=(sqrt(Hsub0)-Kt)^2 where K=(Pi*D^2*sqrt(2g))/(8A)

I´ve got the answer but I need the steps

Answer 1

I´ve already got it.