RIDDLES

Re: RIDDLES

i have a riddle:D

a farmer has a Square Feild which are all the same lenght and same walking distance nothing is different, all 4 sides of the field are equal.

now the Farmer walks around the field every day with out taking a brake. at the same speed.

1st side of the field takes approx 120 minutes

2nd side takes approx 120 minutes

3rd side take 120 minutes

4th side takes 1 hour 40 minutes

why?