Question

a room is 7 metre long and 5 metre broad it has 12 measuring 2 into 1.5 into Windows measuring 1.5 metre into 1 metre find the cost of painting the walls of the room and at Rs 60 per metre?​

Answer 1

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Area to be paint = LSA of rect room -(ar of door +2*ar of window)

=2(L+B)H- (2*1.5+2*1.5*1)

=2(7+5)H -(3+3)

=24H- 6 sqm

area to be paint = total cost/cost per sqm

24H-6. =. 825/12.5

24H-6. = 66

24H. =66+6

H =72/24

H. =3m