Find the volume of the parallelepiped whose conterminous edges are represented by the vectors
i.
ii.
iii.
iv.
i.
Given :
Coterminous edges of parallelopiped are where,
To Find : Volume of parallelepiped
Formulae :
1) Volume of parallelepiped :
If are coterminous edges of parallelepiped,
Where,
Then, volume of parallelepiped V is given by,
2) Determinant :
Answer :
Volume of parallelopiped with coterminous edges
= 1(-1) -1(-2) + 1(3)
= -1+2+3
= 4
Therefore,
ii.
Given :
Coterminous edges of parallelopiped are where,
To Find : Volume of parallelepiped
Formulae :
1) Volume of parallelepiped :
If are coterminous edges of parallelepiped,
Where,
Then, volume of parallelepiped V is given by,
2) Determinant :
Answer :
Volume of parallelopiped with coterminous edges
= -3(-36) -7(36) + 5(-24)
= 108 – 252 – 120
= -264
As volume is never negative
Therefore,
iii.
Given :
Coterminous edges of parallelopiped are where,
To Find : Volume of parallelepiped
Formulae :
1) Volume of parallelepiped :
If are coterminous edges of parallelepiped,
Where,
Then, volume of parallelepiped V is given by,
2) Determinant :
Answer :
Volume of parallelopiped with coterminous edges
= 1(2) +2(2) + 3(2)
= 2 + 4 + 6
= 12
Therefore,
iv.
Given :
Coterminous edges of parallelopiped are where,
To Find : Volume of parallelepiped
Formulae :
1) Volume of parallelepiped :
If are coterminous edges of parallelepiped,
Where,
Then, volume of parallelepiped V is given by,
2) Determinant :
Answer :
Volume of parallelopiped with coterminous edges
= 6(10) + 0 + 0
= 60
Therefore,