The length, breadth and height of a room are 5 m , 4m and 3m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs. 7.50 per square m. *
a) Area - 120 sq.m , Cost - Rs.1100
b) Area -74 sq.m , Cost - Rs 555
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b) Area -74sq.m , Cost - Rs 555
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