The volume of the sphere = volume of the water level raised
R=radius of the sphere=6/2=3cm
volume of the sphere=4/3π R^{3}
r= radius of the cylinder=12/2=6cm, and h= height of the water level raised
volume of the cylinder where the water level is raised=π r^{2} h
4/3πR^{3}  r^{2} h
h=4*3*3*3/3*6*6=1 cm
Ans.. therefore the water is raised by 1 cm.
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