The curved surface area of a cylindrical pillar is 264 sq.m and its volume is 924 cub.m. Find the ratio of its diameter to its height

$\frac{\mathrm{\pi r}}{2h} = \frac{924}{264}$  

=> r = (24/364) x 2 = 7m 

$2\mathrm{\pi rh} = 264 \Rightarrow h = (264 \times \frac{7}{22}\times \frac{1}{2} \times \frac{1}{7}) = 6m$   

Required Rato =2r/h  =14/6 = 7:3