Slab quantity of concrete

Sr. no.
Description
No.
L
B
H
Quantity in cu. meter
1.
Store room
1
2.20
3.00
0.15
0.99
2.
Kitchen room
1
2.50
3.00
0.15
1.125
3.
Varandha (passage)
1
5.70
2.50
0.175
2.49
4.
Bed room
1
5.00
3.60
0.20
3.6
5.
Sitting room
1
5.70
4.10
0.225
5.25
6.
Entrance hall
1
4.20
3.00
0.25
3.15
7.
Bed room
1
3.60
5.00
0.2
3.6
8.
W.C.
1
1.75
0.9
0.1
0.15
9.
Bath room
1
2.60
1.00
0.1
0.26

Total slab quantity = 38.613 cu.meter x 3% wastage
Total slab quantity = 38.613 x 3/100
Total slab quantity = 1.158
Total slab quantity = 38.613 + 1.158
Therefore total slab quantity is = 39.77 cu.m say 40 cu. meter