Question

A window of length 3m and width 2m is fitted in a wall whose length is 6m

and width is 5m. Find the cost of white washing the wall @ rs. 25/​

Answer 1

Answer:

The answer is 24 m and Rs. 600

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Answer 2

Answer:

Area of rectangular door=length×breadth=2m×1m=2m^2

Area of wall including door=length×breadth=4.5m×3.6m=16.2m^2

Now, Area of wall excluding door

=Area of wall including door−Area of door

=16.2−2=14.2m^2

Since, The rate of white washing of 1m^2

the wall=Rs. 20

Therefore, the rate of white washing of 14.2m^2

the wall=20×14.2

=Rs. 284

Thus, the cost of white washing the wall excluding the door is Rs. 284.