Mathematics, 18.05.2021 18:30 Sallyjoe9630
Each edge of a cubical box has length 1 m. The box contains nine spherical balls with the same radius r. The center of one ball is at the center of the cube and it touches the other eight balls. Each of the other eight balls touches three sides of the box. Thus the balls are tightly packed in the box (see the !gure). Find r. (If you have trouble with thi
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