the area of the four walls in a room is 120 m2 the length of twice the breadth .if the height of the room is 4 m find the area of the floor
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Given:-
- Area of four walls of a room is 120m².
- The length is twice the breadth.
- Height of the room is 4m.
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To find:-
- Breadth of the room.
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Solution:-
Let the breadth of the room be b.
Then,
Length of the room will be 2b.
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Note:- Area of four walls means the lateral surface area of the room.
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★ Therefore, we will use the formula of lateral surface area of cuboid.
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★LSA
(Cuboid)
=2(l+b)×h★
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Here
- l = length
- b = breadth
- h = height
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Hence,
The breadth of the wall is 5m.
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