Question

a conference hall is 14 metre long 8m wide and 4m hi there are four windows and one door in at the door measures 1m by 28 and is window measures 1 m by 1.5 m how many litres are needed to paint all the works of the Holy one litre is enough for coming 18 m square be what will be the cost of painting the hall if one litre cost rupees 225

Answer 1

L-14
B-8
H-4
Lsa=2 (l+b)×H =2 (22)×4
=176
door=1×28=28
4 windows=4×1×1.5
=6
So the area to be painted =176-(6+28)
=176-34
=142 m^2
Litres required=142/18
Cost=142/18×225
=1775
Hope it helps