Question

a door of 4×2 m2 and two windows each of 3×2 m2 are fitted in a wall. the length and breath of a wall are 15 m and 10 m respectively. find the cost of white washing the wall, if the rate of white washing the wall is $12 per m2.​

Answer 1

Answer:

Since we have given that

Length of wall = 4.5 m

Breadth of wall = 3.6 m

So, Area of wall is given by

Length of door = 1 m

Breadth of door = 2 m

So, Area of door is given by

Area of white washing the wall excluding the door = Area of wall - Area of door is given by

Cost of per sq. m = Rs. 20

Total cost of white washing the wall is given by

Hence, the cost of white washing is Rs. 284.

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