Option : (C)
Volume of a sphere = \(\frac{4}{3}\)πr3
Volume of a cylinder = πr2h
If a cylinder circumscrimbes a sphere of radius r,
then its base radius is ‘r’ and height is diameter = 2r
Ratio between the volume of a sphere and volume of a circumscribing right circular cylinder
\(=\frac{\frac{4}{3}\pi r^3}{\pi \times r^2\times 2r}\)
= 2 : 3