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

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

Given – The three coterminous edges of a parallelepiped are

To find – The value of λ

Formula to be used -

where and

Tip - The volume of the parallelepiped =

Hence,

=5(21+2λ)-4(λ-28)-11

=206+6λ

The volume =206+6λ

But, the volume = 216 sq units

So, 206+6λ=216 ⇨λ=