For the rectangle cdhg the lengths of two adjacent sides are l and h.
Area of four walls of rectangular room formula.
For the rectangle daeh the lengths of two adjacent sides are b and h.
Hence the total area of the four walls lh bh lh bh.
Question a rectangular room is 6 m long 4 8 m wide and 3 5 m high.
The area of a rectangular wall is hw where h is the height and w is the width.
Observe the opposite walls being of the same size and shape have the same area too.
The total wall area of a room is the sum of the area of each wall.
Its area bh.
In an ordinary rectangular room there are 4 walls and opposite walls are equal and the heights are all equal.
The formula to find the area of the walls of a rectangular room is a 2h l b h is wall height l is room length and b is room breadth.
The area of doors and windows are ignored.
Its area lh.