1}}{{
V
}_{1}}={{P}_{2}}{{V}_{2}}\] Þ\[(H+h)\rho g\times \
FRAC
{4}{
3
}\pi {{r}^{3}}\]\[=H\times \frac{4}{3}\pi {{(
2R
)}^{3}}\] \[\Rightarrow H+h=8H\]\ \[h=7H\]