The radius of a sphere is 12cm. The surface of the
sphere is what percent of its volume
A20%Correct AnswerIncorrect Answer
B25%Correct AnswerIncorrect Answer
C15%Correct AnswerIncorrect Answer
D35%Correct AnswerIncorrect Answer
Solution
Given r = 12cm Surface area of sphere = 4πr22 Volume of sphere =4/3 πr3 According to question = (4πr2)/(4/3 πr3 ) ×100 = 3/r×100 = 3/12×100 = 1/4×100 =25%