Question

A metallic sphere of radius 21 cm is dropped into a cylindrical vessel which is partly filled with water the diameter of the vessel is 1.68 if the

Answer 1

volume of the sphere = $\frac{4}{3}\pi r ^{2}$

volume of cylinder = π r² h

let increase in level  of  water =h

volume of the increase water in the shape of cylinder = volume of the sphere

$\pi r^{2} h = \frac{4 }{3}\pi  r^{3}$

$\frac{22}{7} *8*8*h=\frac{4}{3} * \frac{22}{7}  *6*6*6$

$h= \frac{4}{3} * \frac{6}{8} *\frac{6}{8} * 6$

=h= 9/2= 4.5