If earth has a mass nine times and radius twice to that of a planet P. Then v_e/3 √ x ms^-1 will be the minimum velocity required by a rocket to pull…

If earth has a mass nine times and radius twice to that of a planet P . Then $\displaystyle \frac{v_e}{3} \sqrt{x} \mathrm{~ms}^{-1}$ will be the minimum velocity required by a rocket to pull out of gravitational force of P , where $\displaystyle v_e$ is escape velocity on earth. The value of $\displaystyle x$ is