a solid cone of base radius 5cm and height 6cm is made of metal of density 4g/cm3

Answer 1

You do not say what the question is

The volume of anything pointy with straight sides is (1/3) * base area * height
so
V = (1/3)pi (25)(6)
and the mass is
m = 4 * V

Answer 2

I need an answer

Answer 3

A solid cone of base radius 5cm and 6cm is made of density 4g/m find it's mass . take pie as3.14