Question

Find the area of the four walls of a room whose length is 10m , breadth is 8m and height is 6m. Also find the cost of white washing the walls , @ Rs 5 per m2​

Answer 1

Step-by-step explanation:

It is given that length, breadth and height of a room are 8 m, 5 m and 3 m respectively.

Area of four walls of the room is: 2h(l+b)

A=2h(l+b)=2×3(8+5)=6×13=78 m 2

Area of the ceiling is:

A=l×b=8×5=40 m 2

Total area of the four walls and the ceiling of the room is 78+40=118 m 2

It is given that cost of white washing is Rs.5/m 2

, therefore,

Total cost of white washing is:-

118×5= 590

Hence, the cost of white washing the walls is Rs.590

Answer 2

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