A four-stroke four-cylinder engine has cylinders of 25 cm diameter and 50 cm stroke and runs at 154 rpm. The indicated mean effective pressure is 7.5 kgf/cm^{2} and the mechanical efficiency is 86.4 %. Calculate (a) IHP (b) BHP (c) bmep. (Give powers in kW and bmep in bar; 1 kgf/cm^{2} = 0.981 bar.)