Question

The length breadth and height of a room are 5m 4m and 3m respectively.find the area of four wall.leavibg aside two door and three.window of dimension 2m by 1 and 2m.by 1•5

Answer 1

Length = 5m
Breadth = 4m
Height = 3m
Length of door = 2m
Breadth of door = 1
length of the window = 2m
Breadth of the window = 1.5
Area of the 1 door
2×1 =2 m2
Area of 2 door = 2×2 = 4 m2
Are of 1 window = 2×1.5 = 3m2
Area of 3 windows = 3×3 = 9m2
Area of four walls = 2(length+breadth) ×height - { Area of 2 doors +Area of Windows}
Area of four walls = 2×9×3-{ 4+9}
Area of four walls = 54-13
Area of four walls = 41 m2.
Hope it is helpful for you :)