35. Exemplar Exercise Problems XIX

Find the number of metallic circular disc with \(1.5\) \(cm\) base diameter and of height \(0.2\) \(cm\) to be melted to form a right circular cylinder of height \(10\) \(cm\) and diameter \(4.5\) \(cm\).

 

The required number of metallic circular disc is ​​.