Question

I need the answer!!!
plz it's urgent...​

Answer 1

Total distance 40m in 40 sec.Total time taken by the farmer = 2 min 20 sec. =140 seconds. Total rounds completed= 140/40=3.5 rounds That means if the farmer starts from point A of the square field, he reaches point C.Therefore, displacement is AC. Assume ABC is a right angled triangle. Therefore,AC2= AB2 +BC2 . AC2= (10)2 +(10)2... AC2= 100+100.... AC2=200...... AC = (200)^1/2  ..... AC= 10× (2) ½