Show that the height of a cylinder of given total surface area and open at the top has maximum volumes is equal to the radius of its base .

Show that the height of the cylinder, open at the top of given surface area and greatest volume is equal to the radius of its base.

Show that a cylinder of a given volume which is open at the top has minimum total surface area,when its height is equal to the radius of its base.

Show that a cylinder of given volume, open at the top, has minimum total surface area if its height is equal to radius of the base.

Show that a cylinder of a given volume which is open at the top has minimum total surface area, when its height is equal to the radius of its base.

Show that a cylinder of a given volume which is open at the top has minimum total surface area, when its height is equal to the radius of its base.

Show that the height of a closed right circular cylinder of given surface and maximum volume is equal to diameter of base.

Show that a cylinder of a given volume, which is open at the top has minimum total surface area, when its height is equal to the radius of its base.

Of all the cylinders with given surface area, show that the volume is maximum when height is equal to the diameter of the base .

Show that the height of a closed right circular cylinder of given surface and maximum volume, is equal to the diameter of its base.