Question

A room is 8m long,6m broad and 5.5 M heigh.It has one of the Demension 2.5 m by 2 m and 2 Windows each of dimensions 1.5 by 1 m. find the cost of whitewashing the walls at Rs.3.20 per square metre.

Answer 1

area of walls to be whitewashed = area of walls - area of doors and Windows


=2h (l+b) - 2×2.5-1.5×2
264-5-3
=256 m ^2

cost of whitewash = 256×3.2
=819.2 rs