If the radius of a sphere be doubled, then what percent of its whole surface area will be increased ?

If the radius of a sphere be decreased by 10%, then what percent of its volume will be decreased ?

If the radius of a sphere be decreased by 20%,then what percent of its volume will be decreased ?

The radius of a sphere is doubled. The percentage of increase in its surface area is

If diameter of a sphere is decreased by 25% then what percent does its curved surface area decrease ?

If the radius of a sphere is doubled, what will be the ratio of its surface area and volume as to that of the first?

If the radius of a sphere is doubled, what will be the ratio of its surface are and volume as to that of the first sphere?

If the radius a sphere becomes double, then find the percentage increase in the surface.

If the radius a sphere becomes double, then find the percentage increase in the surface.