a door length 2m and breath 1m is fitted in a wall . the lenght of a wall is 4.5 m and the breath is 3.6 m find the cost of the white washing of the wall if the rate of the white washing of the wall is rs 20 per m2

area of wall=l * b

                                =4.5* 3.6=16.20m

area of door=2m*1m

                     =2m

area of wall without door=16.20-2m

                                            =14.20m

cost of white washing per metre=Rs 20

                                                         =Rs 20*14.20

                                                         =Rs 284

length of door= 2 m

breadth= 1m

area = lxb=2m

length of wall= 4.5m

breadth=3.6

area without door=16.20m-2m=14.20 m

cost of white washing the wall for 1m = Rs.20

cost of white washing the wall

=14.20x20 = Rs. 284.0

thanks