Question

Find the number of bricks each measuring 25 cm into 12.5 cm into 7.5 cm required to construct a wall 12m long 10m high and 0.5m thick, while the cement and sand mixture occupies 1/20 of the volume of the wall

Answer 1

Volume of Wall=1200×1000×50

Volume of Wall without cement and sand=1200×1000×50/1/20

Volume of Wall=300000000cm^3

Bricks required=300000000/Volume of 1 brick

Bricks=1280 bricks