Question

Find the area of four walls of a room whose length breadth and height are 3.5 cm, 4.5 cm and 5 cm respectively ​

Answer 1

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 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.15/m 2 , therefore,Total cost of white washing is:118×15=1770Hence, the cost of white washing the walls is Rs.1770.

Answer 2

Answer:

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