.The length breadth and height of a room are 8m 5m and 4m respectively.There are two doors measuring 2.5m times1m each and two windows measuring 2m times1m each.Find the cost of painting all the four walls and the ceiling at the rate of ₹40/m^(2) .
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Answer:
₹5400
Step-by-step explanation:
area of 4 walls and ceiling = 2h(l+b) + l×b
=2×4(8+5) + 8×5 = 104+40=144
area of 2 doors = 2(2.5×1) = 5
area of 2 windows = 2(2×1) = 4
area to be painted = 4 walls + ceiling - 2 door - 2 windows
= 144-5-4 = 135
cost of painting = 135×40 = 5400
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