What effect does doubling the radius and tripling the height of a cylinder have on the cylinder's volume?

Question

please help

Answer 1

Volume of cylinder V = πr ² h

Here r  = radius, height = h .

If the radius of cylinder is doubling then the radius is 2r .

If the height of cylinder is tripling then the height = 3h

Now the volume of cylinder = π*(2r) ²*3h

V = π*4r ²*3h

V = 12πr ²h.

Volume is increasing 12 times of original volume of cylinder.