24. How many bricks, each measuring 18cm by 12cm by 10cm will be required to build a wall 15m
long 6dm wide and 6.5m high when 1
10
of its volumes occupied by mastar? Please find the cost of
the bricks to the nearest rupees, at Rs1100per 1000bricks.
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Answered by
18
The units are different so remember to convert all the measurement into one unit.
The volume of the wall is 1500cm * 600cm * 650 cm
The volume of each brick is 18cm * 12cm * 10cm
Since 1/10 of the volume is occupied by mortar, the volume of the wall to be occupied by bricks = 1500 * 600 * 650 * 0.9 cm³
The number of bricks = (1500 * 600 * 650 * 0.9) / (18 * 12 * 10) = 243750
The cost of bricks = 243750/1000 * 1100 = 268125
The volume of the wall is 1500cm * 600cm * 650 cm
The volume of each brick is 18cm * 12cm * 10cm
Since 1/10 of the volume is occupied by mortar, the volume of the wall to be occupied by bricks = 1500 * 600 * 650 * 0.9 cm³
The number of bricks = (1500 * 600 * 650 * 0.9) / (18 * 12 * 10) = 243750
The cost of bricks = 243750/1000 * 1100 = 268125
rudeawakening:
1 dm = 10 cm so 6 dm = 60 cm
Apology... I misread the question
the cost should be $26812.5
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1
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