Question

A wall 15m long, 30m wide and 4m high is made of bricks, each measuring (22cm , 12.5cm , 7.5cm). If 1/12 of the total volume of the wall consists of mortar, how many bricks are there in the walls

Answer 1

Volume of wall=15*30*4=1800 m^3
volume of mortar=1/12*1800=150m^3
so; 1800-150=1650m^3
no. of bricks=1650*100/22*12. 5*7. 5=703125