Can a soccer field be 100 by 100?

No, however the maximum width is 90m and the minimum length is 90m, allowing for a 90x90 metre pitch. There exists an additional requirement that the length be longer than the width. So 90x90 would...

A kilometer is 1,000 meters and they typical soccer field is 100 meters. Therefore, it would take ten soccer fields to be one kilometer, not 100.

A 100 at 100 in Poke'mon means that Poke'mon is the best of the best of itself. Pat yourself on the back when you got your first lv.100. Well done! Keep it up and you will even beat me, Best in my...

The area of a square 100 units by 100 units is 10,000 square units.