A cylinder of radius 12 cm contains water to a depth of 20 cm. A spherical iron ball is dropped into the cylinder and thus the level of water is raised by 6.75 cm. Find the radius of the ball. \[(Take\,\pi =\frac{22}{7}).\]

A cylinder of radius 12 cm contains water to a depth of 20 cm. A spher

1.	A cylinder of radius 12 cm contains water to a depth of 20 cm. A spherical iron ball is dropped into the cylinder and thus the level of water is raised by 6.75 cm. Find the radius of the ball. \[(Take\,\pi =\frac{22}{7}).\]
A.	8 cm
B.	9 cm
C.	10 cm
D.	11 cm
Answer» C. 10 cm

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A cylinder of radius 12 cm contains water to a depth of 20 cm. A spherical iron ball is dropped into the cylinder and thus the level of water is raised by 6.75 cm. Find the radius of the ball. \[(Take\,\pi =\frac{22}{7}).\]

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