Question : (1) Two geometrically similar cones have base radius and

Question :
(1) Two geometrically similar cones have base radius and
such that
.
(a) What is the ratio of the height of the bigger cone to the smaller cone ?
(b) If the surface area of the base of the smaller cone is
, what is the surface area of the
base of the bigger cone ?
(c) The two cones are made of material of the same density. Find the mass of the bigger cone, if
the mass of the small cone is 1.5 kg.