Question

If the radius of a cylinder is doubled and height is halved, then
find its volume.

Answer 1

Answer:

what's the radius no. in this it's not given. it's okay

Step-by-step explanation:

Radius +Radius = diameter

volume=diameter

Answer 2

Answer:

The volume of new cylinder = 2(the volume of cylinder), proved.

Step-by-step explanation:

Let radius of cylinder = r and the height of cylinder = h

Show that, the volume of new cylinder will be doubled.

∴ The volume of cylinder= Pi r ^2 h

The radius of new cylinder = 2r and the height of cylinder= h/2

= pi x 4r^2x h/2

= 2( pi x r^2h)

Using (1), we get

=2(The volume of cylinder), proved.

Hence, the volume of new cylinder = 2(the volume of cylinder)

PLZ MARK AS BRIANLIEST AND THX FOR THE SUPERB QUESTION