How to calculate for cement volume?

dry volume of mortar=0.108 ,1.35=0.1458m3
Cement= (1/7) = 0.0208 m3
Density of Cement is 1440/m3 = 0 1440 = 29.99 kg
We know each bag of cement is 50 kg
= (29.99/50) = 0.599 Bags

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