Q. 30

# 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 isA. B. C. D.

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=

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