Question

a door of length 2.5 m and breadth 1m is fitted in the wall the length of wall is 3.5 m and breadth is 2.8m find the costr of white washing of the wall if the rate of white washing the wall is rupees 25 per meter^2

Answer 1

Answer:

Step-by-step explanation:

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