Q14 of 52 Page 344

The volume of a cylinder whose radius r is equal to its height is

Given, r = h

Then, volume of cylinder = πr² h = π r² × r = πr³

If the radius of the cylinder is tripled but its curved surface area is unchanged, then its height will be

How many small cubes with edge cubes of 20cm each can be just accommodated in a cubical box of 2m edge?

The volume of a cube whose edge is 3x is

The figure ABCD is a quadrilateral in which AB = CD and BC = AD. Its area is