If the height of hemisphere and cone is 49cm and height of cone is 35cm find the volume of solid.

Assuming that the two parts share no common volume, then just add up the volumes, using the normal formulas:

Clearly, the radius of the hemisphere (and the base of the cone) is 49-35=14cm

So, the volume is just

(1/2)(4/3)(pi)(14^3) + (1/3)(pi)(14^2)(35) = 4116 pi