Assuming this room is rectangular there are two walls with the dimensions 15 5ft x 12 75ft and two walls with the dimensions.
Area of four walls of rectangular room formula.
Find the inner surface area of the four walls mathematics maths mathsskills funlea.
For the rectangle cdhg the lengths of two adjacent sides are l and h.
The area of a rectangular wall is hw where h is the height and w is the width.
Its area lh.
The total wall area of a room is the sum of the area of each wall.
The area of doors and windows are ignored.
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.
For the rectangle daeh the lengths of two adjacent sides are b and h.
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.
2 l b h this is the correct answer of the area of four walls and ceilings the formula is 2 lb bh hl.