Question

find the number of bricks, each measuring 25 cm x 16 cm x 10 cm required to construct a wall 24 m long, 6 m high and 0.4 m thick. the mortar occupies (1/10)th of the volume of the wall

Answer 1

V = 25 * 16 * 10

V = 4,000

0.9 * 4,000 = 3,600 cubic meters

0.25 * 0.16 * 0.1 = 0.004 cubic meters for each brick

3600 / 0.004 = 900,000 bricks

Answer 2

2000