Volume of solid obtained by revolving the area of the ellipse $\large\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}$=$1$ about major and minor axes are in the ratio

Question

$$\begin{array}{1 1}(1)b^{2}:a^{2}&(2)a^{2}:b^{2}\\(3)a:b&(4)b:a\end{array}$$