IMO Shortlist 1966 problem 44
Dodao/la:
arhiva2. travnja 2012. What is the greatest number of balls of radius
![1/2](/media/m/4/1/2/4120d57ae6d2ae9811f2eeea1020aba4.png)
that can be placed within a rectangular box of size
%V0
What is the greatest number of balls of radius $1/2$ that can be placed within a rectangular box of size $10 \times 10 \times 1 \ ?$
Izvor: Međunarodna matematička olimpijada, shortlist 1966