A 4-cylinder, two-stroke cycle petrol engine develops \(30 \mathrm{~kW}\) at \(2500 \mathrm{rpm}\). The mean effective pressure on each piston is 8 bar and mechanical efficiency is \(80 \%\). Calculate the dia and stroke of each cylinder if stroke to bore ratio is 1.5. Also calculate the fuel consumption of the engine, if brake thermal efficiency is \(28 \%\) and calorific value of fuel is \(43900 \mathrm{~kJ} / \mathrm{kg}\).