Question

a spherical canonball 28 cm in diameter is melted and recast into a right circular cone mould ,base of which is 35 cm in diameter.find the height of the cone

Answer 1

volume remain the same before and after casting

(1/6)*Pi*d^3=(1/12)*Pi*D^2*h

          h = 2 * (28^3 / 35^2) = 35.84 cm