Mark (√) against the correct answer in the following:

If the volume of a parallelepiped having and as conterminous edges, is 216 cubic units then the value of λ is

Given volume of the parallelepiped is 216 cubic units

Given

And

= are the coterminous edges of the parallelepiped.

[216

⇒216=

⇒ 216=5[21-(-2]-(-4)[28-]+1[-8-3]

⇒ 216=5[21+2]+4[28-λ]+1[-11]

⇒ 216= 105 +10 λ +112 -4 λ -11

⇒ 216-105-112+11=6 λ

⇒ 6 λ =10

⇒=

⇒ λ =