How many rectangular pieces of wood of size 25 cm by 12 cm by 8 cm can be cut from a log of wood of size 3 m by 1 mby 72 cm?
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Number of cubic blocks =20 cm×20 cm×20 cm2 m×80 cm×40 cm
=20 cm×20 cm×20 cm200 cm×80 cm×40 cm
=10×4×2
=80
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