The perimeter of a floor of a room is 40m and it's height is 4m. Find the area of a the four walls of the room
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Given:- Perimeter of the rectangular floor:-40m
Height of the room:-4m
To find:- Area of the four walls or CSA of the room.
Solution:- We know that the CSA of a cuboid:- 2h(l+b)
or:- hx2(l+b)
Also, 2(l+b)= Perimeter of the rectangle. So,
CSA of Room:- hx40
:- 4x40
:- 160m^2
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