Question

find the cost of white washing wall at the rate of rupees 20per m square.having a window of size 0.5m×8m and a door of size 1m×0.5m.if the length of wall is 5m and breadth is 4m
pls answer correctly.. important​

Answer 1

Answer:

Step-1: Finding the area for calculating the cost

           From the given values,

           Area of the wall including the door =length×breadth

                                                                            =4.5×3.6=16.2m

Area of the door =2×1=2m

Area of wall excluding door =16.2−2=14.2m

Step-2: Finding the cost of white washing

The rate of white washing 1m

 of the wall is Rs.20

The rate of white washing 14.2m

 of the wall is =20×14.2=Rs.284

Hence , the rate of white washing the wall excluding the door is Rs.284.