How many bricks of size22 cm × 10 cm × 7 cm are required to construct a wall 11 cm long, 3.5m high and 40 cm think, if the cement and sand used in the construction occupy (1/10th) part of the wall?
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Ans-90
The volume of the wall=l*b*h
So 11*350*40=154000cm
1/10 of the part =1/10*154000=15400
Now 154000-15400=138600
138600is the speprated part
So now the volume of the brick =22*10*7=1540cmcube
For each brick further the speprated part÷the voulme of each brick
138600÷1540=90
So total 90 bricks where there.
Hope it will help u.
The volume of the wall=l*b*h
So 11*350*40=154000cm
1/10 of the part =1/10*154000=15400
Now 154000-15400=138600
138600is the speprated part
So now the volume of the brick =22*10*7=1540cmcube
For each brick further the speprated part÷the voulme of each brick
138600÷1540=90
So total 90 bricks where there.
Hope it will help u.
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