That would be 0.4 acre.
Basically 44 lengths of the pool will slightly exceed 1000 meters. There are 1094 yards (rounded) in 1000 meters. 1094/25 = 44 laps (rounded)
60 meters = 65.6 yards
3 yards = 2.7432 meters
100 yards = 91.44 meters.
120 yards = 109.728 meters.
120 meters = 131.23 yards.
7.20 yards = 6.584 meters.
160 yards = ~146.3 meters.
12 meters = 13.12 yards.
3 meters = 3.281 yards.
10 yards = 9.144 meters