A cylindrical cistern whose diameter is 14 cm is partly filled with water If a rectangular block of ...........

Quantitative Aptitude ( CCS) Mensuration 3D

A cylindrical cistern whose diameter is 14 cm is partly filled with water. If a rectangular block of iron 22 cm in length, 18 cm in breadth and 7 cm in thickness is wholly immersed in water, by how many cm will the water level rise?

10 cm

18 cm

12 cm

16 cm

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Explanation:

Answer & Explanation
Answer – B. 18 cm
Explanation :
Volume of the Rectangular Block = 22 * 18 * 7
Radius of the Cistern = 7 cm
Area of the Cylinder = Π * r² * h = 22/7 * 7 * 7 * h
22/7 * 7 * 7 * h = 22 * 18 * 7; h = 18 cm