Question

A door of breadth 1 metre and height 2 metre is fitted in a wall the length of the wall is 4.5 M and the height is 3.6 metre find the cost of whitewashing the walls if the rate of whitewashing the wall is 20 rupees per metre square

Answer 1

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Answer 2

A door of breadth 1 metre and height 2 metre

∴area of the door = [length * breadth] =[1 m*2m]   =2m^2  

the length of the wall is 4.5 M and the height is 3.6

∴area of the wall = [length * breadth] = [4.5m*3.6m]=16.2 m^2

∴area to be painted = [area of the wall - area of the door ]

∴area to be painted= [16.2 m^2 - 2m^2 ] = 14.2m^2  

the rate of whitewashing the wall is 20 rupees per metre square

= Rs 14.2m^2 *20 =  Rs 284 ANS