The area of 4 wall of a room is 150msq . If it's breadth be 6.y2k and height is 5m,find the length of room?
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Solution:
Dimensions of the room :
Breadth (b) = 6 m
height (h) = 5 m
Let the length = l m
Area of four walls = 150 m²
[(l+b)h]/2 = 150 m²
=> [ (l+6)×5 ]= 300
=> l + 6 = 300/5
=> l + 6 = 60
=> l = 60 - 6
=> l = 54 m
Therefore ,
Length of the room = l = 54 m
••••
Dimensions of the room :
Breadth (b) = 6 m
height (h) = 5 m
Let the length = l m
Area of four walls = 150 m²
[(l+b)h]/2 = 150 m²
=> [ (l+6)×5 ]= 300
=> l + 6 = 300/5
=> l + 6 = 60
=> l = 60 - 6
=> l = 54 m
Therefore ,
Length of the room = l = 54 m
••••
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