9:58 Usaain Bolt
9.58 seconds set in Berlin 2009 by usain bolt.
She set the record in September 1981. The record stood for nearly 17 years.
united states of America
109.36 yards.
0.1
100metres
2 hectare
100 meters is 0.06 miles.
0.79metres or 79/100metres
53km/h, 14.72m/s or 6.79seconds/100metres
Divide by 0.3048 to convert from meters to feet
One hectare.