45. How long will a man take to walk round theboundary of a square fie

1.	45. How long will a man take to walk round theboundary of a square field containing 9 hectares atthe rate of 6 km/hour ? (1 hec. 10000 sq.m.)
Answer» 9 hectare = 9 × 10⁴ m² Side length of square field = √(Area)= √(9 × 10⁴ m²)= 3 × 10² m= 300 m= 0.3 km Time = Distance / Speed= 4L / v= (4 × 0.3 km) / (6 kmph)= 0.2 hour= 12 minutes It takes 12 minutes for him to walk round the boundary for once.

45. How long will a man take to walk round theboundary of a square field containing 9 hectares atthe rate of 6 km/hour ? (1 hec. 10000 sq.m.)

Answer»

9 hectare = 9 × 10⁴ m²

Side length of square field = √(Area)= √(9 × 10⁴ m²)= 3 × 10² m= 300 m= 0.3 km

Time = Distance / Speed= 4L / v= (4 × 0.3 km) / (6 kmph)= 0.2 hour= 12 minutes

It takes 12 minutes for him to walk round the boundary for once.