Question: ( a ) A ball is packed in a cube with the edge length of 1 0 c m and it touches all the faces

(a) A ball is packed in a cube with the edge length of 10cm and it touches all the
faces of the cube. What percentage of the cube is unoccupied?
(b) Five identical balls fit exactly into a rectangular box of width 20cm, as shown.
Find the volume of the box.
( a ) A ball is packed in a cube with the edge

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