1) The radius of sphere is doubled.What would be the effect on the surface area of the sphere? A) Becomes 16 times B) Becomes 8 times C) Becomes 4 times D) Becomes 2 times Answer: Option CExplanation:If radius=4, Surface area $=\pi r^{2}$ If radius=2r, Surface area $=\pi (2r)^{2}=16\pi r^{2}$ $4\times 4\pi r^{2}$ = 4 times the original surface area
