3. How many bricks, each of dimensions 25 cm x 16 cm x 10 cm will be needed to build a wall 24 m long,
6 m high and 0.4 m thick.
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Answer:
volume of the wall/volume of brick=no of brick needed to make the wall
=> 100(24 ×6×0.4)/25×16×10=
5760/40=144//
Therefore 144 bricks is needed to make the wall.
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