cement of bag for 1 cum m25 separation of coal how many cement use for 1cum concrete for 25Grade 1 Part of cement would be 1 54 4 0 385 cum 1 bag of cement 035 cum total bag of cement 0 385 035 11 bags 1 bag of cement 50 kg of cement 11 bags 50 x 11 550 kg of cement cement required for 1 cum of m25 grade concrete