A single stage, double acting air compressor running at $120rpm$ and power input of $75kW,$ piston speed $1200\frac{m}{m}in,$ suction pressure $1$ bar and delivery pressure is $10$ bar. Take volumetric efficiency as $85\%.$ The law for relevant compression and expansion $($if any$)$ is $P{V}^{1\mathrm{.}25}=C.$ Find the cylinder bore and clearance volume as a percentage of stroke volume. $(0\mathrm{.}338m)$