Show that the surface area of a closed cuboid with surface base and given volume is minimum when it is cube.

The surface area of a cuboid is

The surface area of a cube if its edge is a is?

Find the surface area of cube A and lateral surface area of cube B.

Find the surface area of a cube whose edge is 12 cm.

Find the total surface area of the following cuboids.

Find the total surface area of the following cuboids.

Show that the right circular cone of least curved surface and given volume has an altitude equal to sqrt2 times the radius of the base.