If the radius of sphere is tripled, does the volume also triple? Why?

Answer 1

V = (4/3)(pi) (R^3)

triples the radius

_V = (4/3)(pi)(3R)^3

= (4/3)(pi) (27R^3)

= (27) (4/3)(pi)(R^3)

= (27)[ (4/3)(pi)(R^3)]

= 27 V

Not tripled, but 27 TIMES as big !!!!