A square $6$ cylinder engine$/$four stroke Sl engine has a $0\mathrm{.}00005$m$3$ cylinder capacity with engine speed of $3600$ rpm$,$ compression ratio $9\mathrm{.}5$ and $0\mathrm{.}166$ m piston rod, the combustion ends at $20\backslash$deg C after TDC$.$ FIND: $1-$ Piston diameter and piston stroke length $2-$ Average piston speed $3-$ Clearance volume for one cylinder $4-$ Distance traveled by the piston from TDC at the end of combustion $5-$ Volume in the combustion chamber at the end of combustion.