Question

. A door of length 2 m and breadth 1m and a window of length 1 m and breadth 0.5 m are fitted in a wall
4.5 m in length and 4 m in breadth. Find the cost of washing the wall at the rate of 20 per m²
de the park all around. Find the​

Answer 1

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.

Explanation:

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