median
don steward
mathematics teaching 10 ~ 16

Wednesday, 29 December 2010

semicircle cutting

in a local factory one of the tasks was to cut out many semicircles, as lugs to be welded onto a drain hole cover

they cut these out with a laser in an obvious way:
















is there a more efficient way to do this?

how might you compare these two (and any other arrangements)?








there needed to be some distance between the shapes, otherwise the heat from the cutting process would warp the metal (say 2mm)

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