Question

The area of a square field is 60025 m². A man cycles along its boundary at 18 km/hr. In how much time will he return at the starting point?

Answer 1

Area of the square field = 60025 m²
The length of the square field would be the square root of 60025.
Using the long division method:

Hence, the length of the square field is 245 m.
The square has four sides, so the number of boundaries of the field is 4.
The distance s covered by the man =` 245 m xx4=980 m =0.98` km
If the velocity v is 18 km/hr, the required time t can be calculated using the following formula:
`t=s/v`
`t= 0.98/18=0.054` hr = 3 minutes, 16 seconds 

So, the man will return to the starting point after 3 minutes and 16 seconds.