(145) 2

Part of 1987 Tournament Of Towns

Problems(1)

TOT 145 1987 Spring Main S2 disk of radius 1 is covered by 7 identical disks

Source:

Α disk of radius

1

is covered by seven identical disks. Prove that their radii are not less than

\frac12

Coverdiscsdisccombinatorial geometrydistance