# Metal spheres each of radius 2cm are packed into a rectangular box of internal dimension

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Metal spheres each of radius 2cm are packed into a rectangular box of internal dimension 16cm x 8cm x 8cm when 16 spheres are packed the box is filled with preservative liquid. Find volume of this liquid?

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Given radius of metal spheres = 2cm

Subtracting (2) – (1) we get volume of liquid