a door of length 4m and breadth 3m is fitted in a wall.the length of the wall is 16m and the breadth of the wall is 13.9cm find the cost of white washing the wall at rate of 20rs per square meter
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I will assume that all are in metres,
area of wall is 16*13.9 = 222.4 m^2
area of door is 4*3 is 12 m^2
now 222.4 - 12 is 210.4 m2
then, cost is 210.4*20 is 4208
area of wall is 16*13.9 = 222.4 m^2
area of door is 4*3 is 12 m^2
now 222.4 - 12 is 210.4 m2
then, cost is 210.4*20 is 4208
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