How many bricks of size 21 cm × 10 cm×5 cm are needed to build a wall 15 m long 7 m high and 80 cm thick. if the bricks are sold at 800 rs per thousand what will be the cost of the bricks required to build the wall
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Hey mate here is your anwer...
Vol of wall = LBH = 15×7×80/100 = 84m cube
Vol of each brick = LBH = 21/100×10/100×5/100 = 0.00105m cube
No. of bricks required = Vol of wall/Vol of each brick = 84/0.00105 = 80000
Cost of 1000 bricks = Rs.800
Cost of 1 brick = 800/1000= Rs.0.8
Cost of 80000 bricks = 0.8×80000 = Rs.64000 Ans
Vol of wall = LBH = 15×7×80/100 = 84m cube
Vol of each brick = LBH = 21/100×10/100×5/100 = 0.00105m cube
No. of bricks required = Vol of wall/Vol of each brick = 84/0.00105 = 80000
Cost of 1000 bricks = Rs.800
Cost of 1 brick = 800/1000= Rs.0.8
Cost of 80000 bricks = 0.8×80000 = Rs.64000 Ans
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number bricks 80000 cost rs64000
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