The areas of the curved surface and the base of a right circular cylinder are 'a' sq.cm and ‘b ́ sq.cm respectively. The height of the cylinder (in cm) is :
1
\( \frac{22 a}{\sqrt{\pi b}} \)
2
\( \frac{a \sqrt{b}}{2 \sqrt{\pi}} \)
3
\( \frac{a}{2 \sqrt{\pi b}} \)
4
\( \frac{a \sqrt{\pi}}{2 \sqrt{b}}\)