Question

1)question. how many bricks  will be required to build a wall of 8m long, 6m hight and 22.5cm thick, if each brick measures 25cm by 6cm?

Answer 1

Surface area of wall = n(surface area of 1 brick)

first convert surface area of brick into m² from cm²

Answer 2

as simple as that ...volume of wall /vol. of 1 brick