Power Plant Equipment past question

In a test for four-cylinders four-stroke engine: diameter=100 mm, stroke=120 mm, speed=1800 rpm, fuel=0.2 kg/min, CV=44000 kJ/kg, tension difference=40 kg, brake circumference=300 cm, mechanical efficiency=90%. Determine: i) Brake thermal efficiency ii) Indicated thermal efficiency iii) IMEP iv) BSFC.