4ft
How many cu ft
if you swim 100m in 60 secs then you should be able to swim 100yd(=91.44m) in 60*91.44/100=54-55sec If you swim 100yd in 1 minute you probably will be able to swim 100m in 91.44/60*100=65-66 secs. Since 100m is longer than 100yd this time will be correct provided you can swim the last 10 meters at the same speed as you swim the 100yds.
No.
About 100yd
5
It equals 219 because there are 3 ft in a yd. :P
156 sq. ft.
20 ft.
13 ft.
9 ft.
3 ft