Question

5. A door of length 4m and breadth 2m is fitted in the wall. The length and breadth of the wall are 12m and 8m
respectively. If the cost of whitewashing the wall is Rs 4400, find the rate of white washing​

Answer 1

Answer:

Step-by-step explanation:

White washing=ar.of wall- ar. Of door

12×8+2×4

62+8

70m2

70m2_ Rs 4400

1m2 _ 4400/70

=Rs 62.85

Answer 2

Answer:

here is your answer

Step-by-step explanation:

Area to be whitewashed = sa of the room - sa of the door

ar. of whitewash =(l*b)-(l*b)

                            =(12*8)-(4*2)

                            =(96)-(8)

                             =88m^2 area to be whitewashed

Rate of whitewashing = Cost/area of the room

                                      =4400/88=Rs.50 per m^2

Cost of whitewashing per m = Rs.50 per m^2