13 and 14 quetions please.tomorrow is my exam so please send them quickly

Dear student

13) Since the areal velocity proportional to the angular velocity and the position vector so 
$$\begin{gathered} \frac{dA}{dt}\propto \omega r \\ so correct option is \left(1\right). \\ \left(14\right) Given that \\ {r}_1=15\times {10}^{10} m and T_1=1 year \\ {r}_2=540\times {10}^{10} m T_2=? \\ by Keplar\text{'}s third law T^2\propto r^3 \\ so \\ \frac{T_2}{T_1}={\left(\frac{r_2}{r_1}\right)}^{3/2} \\ {T}_2=1\times {\left(\frac{540\times {10}^{10}}{15\times {10}^{10}}\right)}^{3/2} \\ {T}_2={\left(36\right)}^{3/2} \\ {T}_2=216 years \\ so correct option is \left(1\right) \end{gathered}$$