Answer
The girl rises by $0.67m$
Work Step by Step
According to the principle of energy conservation, the total energy $E$ remains constant, meaning a decrease in kinetic energy corresponds to an equal amount of increase in potential energy. $$\Delta PE=-\Delta KE=-(210J-440J)=230J$$
$PE$ can be calculated by $PE=mgh$, so here $$mg\Delta h=230$$ $$\Delta h=\frac{230}{mg}=\frac{230}{35\times9.8}=0.67m$$
