1993.4

Part of Cono Sur Shortlist - geometry

Problems(1)

51 circles of diameter 1 in 5x8 - 1993 Cono Sur Shortlist G4

Source:

Is it possible to locate in a rectangle of

5

8

51

circles of diameter

1

cm, so that they don't overlap? Could it be possible for more than

40

circlesgeometryrectangle