Surface Area Of Cube Cuboid And Cylinder

The surface area of the sphere x² + y² + z² = 9 lying inside the cylinder x² + y² = 3y is

If the side of a cube is increased by 25% then volume of the cube will increase by (correct to one decimal place):

The volume of cylinder is 1408 cm³ and its height is 7 cm. Find the total surface area of the cylinder (correct to 2 decimal places).
(Use )

If radius of a cyclinder is increased by 10%, while height remains unchanged. What will be the effect on its volume:

The ratio of volumes of two cones is 2:3 and the ratio of radii of their bases is 1:2. The ratio of their heights is:

A rectangular box open at the top is to have volume of 32 cubic feets. The minimum outer surface area of the box is

A large cube is formed by melting three solid metallic cubes of sides 3cm, 4cm and 5cm respectively. What is the ratio of the sum of the surface areas of the given cubes and that of the new cube?

When a painted cube is cut into 125 small identical cubes, how many smaller cubes have no face painted?