How do you calculate this problem?
Using the project documents, calculate the quantity of plasterboard (in m'2) for the double-walled installation wall between rooms 4.7 and 4.8 in the attic. h = clear shell height 1)23.98 m² 2)32.31 m² 3)45.69 m² 4)47.95 m² 5)64.61 m²