A door of length 4m and breadth 2m is fitted in a wall. The length and breadth of the room are 12m and 8m respectively .If the cost of whitewashing the wall(excluding the area of the door) is Rs. 4400 , then find the rate of whitewashing per m^2.
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Step-by-step explanation:
area of wall=l*b=12*8=96
area of door=l*b=4*2=8
96-8=88
cost of whitewashing=4400/88
=50₹
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