A 6 cylinder four stroke cycle petrol engine develops \(300 \mathrm{~kW}\) bp at 2500 r.p.m. The stroke to bore ratio is 1.25. Assuming the mechanical efficiency of \(80 \%\) and mean effective pressure of \(9 \mathrm{bar}\), determine the bore and stroke of engine.

Also find the fuel consumption in \(\mathrm{kg} / \mathrm{hr}\) if indicated thermal efficiency is \(30 \%\) and C.V. of fuel used is \(41900 \mathrm{~kJ} / \mathrm{kg}\).