8. A wooden log is 5 m long, 4 m broad and
2 m high. It is to be cut into cubical pieces of
side length ½ m.
How many cubical pieces can be made ?
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Step-by-step explanation:
volume of wooden log = length×breadth×height
= 5m × 4m × 2m
= 40 m³
volume of cubical pieces = (side)³
= ½m × ½m × ½m
= ⅛m³
cubical pieces can be made from the wooden log =
(volume of wooden log) ÷ (volume of cubical pieces)
= 40 ÷ ⅛
= 40 × 8
= 320 pieces
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