Answer :

Volume of cuboid = lbh


where, l = length, b = breadth and h = height


For wall,


Length, l = 270 cm


Breadth, b = 300 cm


Height, h = 350 cm


Volume of wall = 270 × (300) × (350) = 28350000 cm3


As of this volume is covered by mortar, therefore of this volume is covered by bricks.


Volume of wall covered by bricks = 7/8 (volume of wall)


= 7/8 (2835000)


= 24806250 cm3


For one brick,


Length, l = 22.5 cm


Breadth, b = 11.25 cm


Height, h = 8.75 cm


Volume of one brick = lbh


= 22.5(11.25)(8.75) cm3




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