Question

THE WALL LENGTH =3 CM AND breath is 2 CM find the cost of white wash if rate is ruees 0.10 per CM square .​

Answer 1

Answer:

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Rs 1770

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 m2

Area of the ceiling is: 

A=l×b=8×5=40 m2

Total area of the four walls and the ceiling of the room is 78+40=118 m2

It is given that cost of white washing is Rs.15/m2, therefore,

Total cost of white washing is:

118×15=1770

Hence, the cost of white washing the walls is Rs.1770.

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Answer 2

Answer:

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 m2

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.15/m  

2

, therefore,

Total cost of white washing is:

118×15=1770

Hence, the cost of white washing the walls is Rs.1770..

Step-by-step explanation: