(Q) How many bricks each measuring 25cm x 11.25cm x 6cm, will be needed to build a wall 8m x 6m x 22.5m ?

A) 5300
B) 7200
C) 6400
D) None of the above

View Answer

C) 6400

Explanation :
No. of bricks= volume of the wall/volume of 1 brick
= (800 x 600 x 22.5) / (25 x 11.25 x 6) = 6400