Q. 17

# Show that the hei

Let r and h be the radius and the height of the cylinder respectively.

Now, h =

The volume (V) of the cylinder is given by:

V = πr2h =2 πr2

Now, if

Now,

Now, we can see that at, , < 0.

Therefore, the volume is the maximum when.

When , the height of the cylinder is .

Therefore, the volume of the cylinder is the maximum when the height of the cylinder is .

Hence Proved.

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