A rectangular block of 6cm by 12cm by 15cm is cut up into exact number of equal cubes. the least possible number of cubes will be?
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area of cuboid = 2(lb+bh+lh)
= 2(6×12+12×15+6×15)
=2(72+180+90)
=2(342)
=684
680equal cubes
= 2(6×12+12×15+6×15)
=2(72+180+90)
=2(342)
=684
680equal cubes
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