the perimeter Of the floor of a room is 46 m and its height is 3.5 m. find the area of the walls of the room.
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perimeter of the floor of a room = 46 m
let
l = length , b = breadth and h = height
2 ( l + b) = 46 m
l + b = 23 m
______________________________
Find Area of the walls :
______________________________
Area of the walls =2bh + 2hl
= 2h ( b + l ) = 2 h ( l + b )
= 2 × 3.5 ( 23 ) = 161 m^2
therefore ,
area of the walls of a room = 161 m^2
_______________________________
Your Answer : 161 m^2
_______________________________
hope it helps u mate...
pls mark me brainliest
let
l = length , b = breadth and h = height
2 ( l + b) = 46 m
l + b = 23 m
______________________________
Find Area of the walls :
______________________________
Area of the walls =2bh + 2hl
= 2h ( b + l ) = 2 h ( l + b )
= 2 × 3.5 ( 23 ) = 161 m^2
therefore ,
area of the walls of a room = 161 m^2
_______________________________
Your Answer : 161 m^2
_______________________________
hope it helps u mate...
pls mark me brainliest
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