For the rectangle cdhg the lengths of two adjacent sides are l and h.
Area of four walls of rectangular room formula.
Find the inner surface area of the four walls mathematics maths mathsskills funlea.
The area of doors and windows are ignored.
The total wall area of a room is the sum of the area of each wall.
2 l b h this is the correct answer of the area of four walls and ceilings the formula is 2 lb bh hl.
Observe the opposite walls being of the same size and shape have the same area too.
In an ordinary rectangular room there are 4 walls and opposite walls are equal and the heights are all equal.
Hence the total area of the four walls lh bh lh bh.
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.
Its area bh.
Assuming this room is rectangular there are two walls with the dimensions 15 5ft x 12 75ft and two walls with the dimensions.
Question a rectangular room is 6 m long 4 8 m wide and 3 5 m high.