This question was previously asked in

PGCIL DT Civil 2020 Official Paper

Option 3 : 28.8 bags

The basic things you should know to calculate the volume of 1 bag of cement are,

Density of cement = 1440 kg/ m³

1 bag = 50 kg of cement

1 m³ = 35.3147 cubic feet

**Number of cement bags required in 1 m³ = Weight of cement in 1 m³/weight of cement in one bag**

i.e., number of cement bags required in 1 m³ = 1440/50 = **28.80** No’s

NOTE ∴ Volume of one cement bag = 1/28.8 = **0.034722 m³**