Mass remains same in this case. Radius of the sphere will increase. Surface area of sphere is proportional to (radius)2 and Volume is proportional to (Radius)3 so the volume will undergo maximum percentage increase.

Mass remains same in this case. Radius of the sphere will increase. Surface area of sphere is proportional to (radius)2 and Volume is proportional to (Radius)3 so the volume will undergo maximum percentage increase.