Question

a brick measure 20cm. multiply 10 centimetre multiply 3.5 centimetre how many bricks will be required for a Wall of dimension 25m multiply 2 multiply 0.35metre

Answer 1

brick = 20×10×3.5cm3

wall = 2500 ×200×35cm3

number of bricks = 2500×200×35/20×10×.35 (wall /brick)


€ 25,000 bricks

Answer 2

measure of brick:20cm× 10cm× 3.5cm

volume of 1 brick = length × breadth × height

= 20cm× 10cm× 3.5 cm

= 0.2m × 0.1m × 0.035m = 0.0007m^3

volume of wall = 25m × 2m × 0.35m

= 17.5m^3

required number of bricks

= volume of wall /volume of brick

= 17.5m^3 / 0.0007m^3 = 25000

Answer: 25000 bricks