defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Mensuration Solid Figures
How many bricks are required to build a 21 m long, 12 m high and 36 cm thick wall, if each brick measures 28 cm × 18 cm × 6 cm?
1
24000
2
30000
3
25000
4
20000