Question

4.A Metallic sphere of radius 4.2cm is melted and recast in to the shape of a cylinder of radius 7cm . The height of cylinder is (3 Points) 2.044cm 2.704cm 2.106cm 2.016cm

Answer 1

Answer:

volume of sphere = 4.pi.r^3/3 = 4.pi.(4.2)^3/3

volume of cylinder = pi.r^2.l = pi.7^2.l

pi.7^2.l = 4.pi.(4.2)^3/3

After simplifying

l = 2.016 Ans