Answer:

Explanation:
For hemisphere...
diameter (d1) = 3m
radius (r1) = (3/2)m
The total volume of the hemisphere



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For smaller cylinder
diameter (d2) = 0.75
radius (r2) = 0.75/2m
height (h2) = 0.80m
Volume of smaller cylinder
(V2) =



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For bigger cylinder
Volume of bigger cylinder =


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Volume of water =
