Question

4. How many bricks will be required to build a wall 30 m long, 50 cm thick and
2.5 m high with each brick being 20 cm long, 10 cm wide, and 7.5 cm thick?​

Answer 1

Answer:

number of bricks= volume of wall / volume of 1 brick

number of bricks= 30m×.5m×2.5m/ 20× 10×7.5

number of bricks= 37.5m³ / 1500cm³

number of bricks= ( 37500000 / 1500) cm³

number of bricks= 25000