How many bricks each 25 cm long,10 cm wide and 7 .5 cm thick,will be required for a wall 15 long,2.5m high and 1.25 m thick?
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volume of each brick = 25×10×7.5= 1875 cm cube.
volmue of wall = 1500×250×125 =46875000 cube.
brick required = 46875000÷1875 = 25000 bricks
volmue of wall = 1500×250×125 =46875000 cube.
brick required = 46875000÷1875 = 25000 bricks
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