Question 1112271
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I just solved very similar problem today under the link

<A HREF=https://www.algebra.com/algebra/homework/word/geometry/Geometry_Word_Problems.faq.question.1112243.html>https://www.algebra.com/algebra/homework/word/geometry/Geometry_Word_Problems.faq.question.1112243.html</A>


https://www.algebra.com/algebra/homework/word/geometry/Geometry_Word_Problems.faq.question.1112243.html



The water level rise in the cylindrical vessel is equal to the volume of all immersed bodies (9 spheres in your case) 
divided by the base area of the vessel.


Read that lesson and complete the solution on your own.


Now, when all the principles are explained to you, I hope you are able to solve ANY of similar problems on your own.


Also, I hope that you will not send more of the same type problems to the forum with 7, 8 or 29 spherical balls, or whichever it is.




I love such problems, and I love to explain their solutions, but not more that 2 times to the same person.