RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Surface Area and Volume of a Sphere

Subject: Mathematics - Class 9th

Q. No. 18 of Exercise 21.2

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18

A measuring jar of internal diameter 10 cm is partially filled with water. Four equal spherical balls of diameter 2 cm each are dropped in it and they sink down in water completely. What will be the change in the level of water in the jar?

Volume of a sphere = (4/3)πr3


Volume of a cylinder = πr2h


Amount of water displaced = Volume of the spheres


Given, measuring jar of internal diameter 10 cm is partially filled with water. Four equal spherical balls of diameter 2 cm each are dropped in it and they sink down in water completely.


Let the rise in level of water be ‘h’ cm.



h = 16/75 cm


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