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=

1