powershell, 272 bytes

Result

WA

Duration

1219ms

Code [DL]

$a =Read-Host
$b =Read-Host
$c =Read-Host
$d =Read-Host
$x=@()
$y=@()
$z=@()
foreach($i in 0..2){
$x+=$b[$i]-$a[$i]
$y+=$c[$i]-$a[$i]
$z+=$d[$i]-$a[$i]
}

echo(($x[0]*$y[1]*$z[2]+$x[1]*$y[2]*$z[0]+$x[2]*$y[0]*$z[1]-$x[1]*$y[0]*$z[2]-$x[2]*$y[1]*$z[0]-$x[0]*$y[2]*$z[1])/6)

stdin

38 05 43
95 66 74
05 74 14
47 52 60

stdout

38 05 43
95 66 74
05 74 14
47 52 60
0

stderr

strace