SSC Steno Grade C and D 6 Feb 2019 Shift 1 Paper

VD Raman's house is 30 in to the left of a temple, which is 40 in to the north of a church. One day, VD Raman starts 8 from his house and takes the road which is parallel to the temple-church road and walls 50 m before turning to his right. He further walks 20 m and reaches a gym.
What is difference between the straight distance between VD Raman's house and the church and the temple and the gym?