Question

A door of length 1 m and breadth 3 m is fitted in a wall. The length of the wall is 6 m and the breadth is 7.5 m. Find the cost of white washing the wall, if the rate of white washing the wall is ₹ 100 per sq m. *​

Answer 1

Answer:

Area of rectangular door=length×breadth=2m×1m=2m2

Area of wall including door=length×breadth=4.5m×3.6m=16.2m2

Now, Area of wall excluding door

=Area of wall including door−Area of door

=16.2−2=14.2m2

Since, The rate of white washing of 1m2 the wall=Rs. 20

Therefore, the rate of white washing of 14.2m2 the wall=20×14.2

=Rs. 284

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

Answer 2

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