The edges of a parallelopiped are of unit length and are parallel to non-coplanar unit vector `hata, hatb, hatc` such that
`hata . hatb = hatb . hatc = hatc . hata = 1/2.`
Then, the volume of the parallelopiped is
`1/sqrt(2)`
`1/(2sqrt(2))`
`sqrt(3)/2`
`1/sqrt(3)`
solution kahan hai..........