SSC JE Civil Engineering 2018 Set 1 Solved Paper

consider modular Brick,
size of brick = 19 cm × 9 cm × 9 cm
Now, volume of brick with mortar = 20 cm × 10 cm × 10 cm = 0.002 m${}^3$
Volume of Brick work in 1 m${}^3$
No. of Brick $=\frac{\mathrm{Volume}\mathrm{of}\mathrm{Brick}\mathrm{work}}{\mathrm{Volume}\mathrm{of}1\mathrm{brick}\mathrm{withmortar}}$
$=\frac{1}{0.002}$
= 500 bricks
No. of bricks for 20m${}^3$ brick work
= 20 × 500
= 10,000 Bricks