Aroom is 8 metre long 6 m broad and 5.5 m.It has one door of dimension 2.5 m by 2 and 2 Windows each of dimension 1.5 m by 1 m find the cost of whitewashing the walls at 3.20 per square metre
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Lateral surface area of room=2h(l+b)
=(11×14)m^2
=154m^2
area of door=2.5m×2m=5m^2
area of window=1.5m×1m=1.5m^2
area of wall to be whitewashed=(154-5+1.5)m^2
=147.5m^2
cost of whitewashing=147.5×₹3.20=₹472
=(11×14)m^2
=154m^2
area of door=2.5m×2m=5m^2
area of window=1.5m×1m=1.5m^2
area of wall to be whitewashed=(154-5+1.5)m^2
=147.5m^2
cost of whitewashing=147.5×₹3.20=₹472
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