Starting point = 440m away from wall
Distance covered = Starting point X echo
Time taken = 2sec
So, the speed of sound is
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Distance covered by sound=2 x 440 =880 mtime taken to covered 880 m is =2sec
so , speed of sound=880/2=440m/sec
Starting point = 440m away from wall
Distance covered = Starting point X echo
Time taken = 2sec
So, the speed of sound is