Question

write the expression to find area of four walls​

Answer 1

• The expression to find the area of four walls is 2(l+w)h, where l, w and h are length, width and height respectively. (for rectangular room and rectangular walls)

• OR, The expression to find the area of four walls is 4lh, where l and h are length and height respectively. (for squared room but rectangular walls)

• OR, The expression to find the area of four walls is 4l², where l and l are length and height respectively. (for squared room and squared walls)

Step-by-step explanation:

Part 1. (for rectangular room and rectangular walls)

[ A room is rectangular, that is, its walls are also rectangular, then we calculate the area of the four walls. ]

There are two walls with height h on the length l, and thus the area of these two walls is 2lh.

Also, there are two walls with height h on the width w, and thus the area of these two walls is 2wh.

So, the area of the four walls = 2lh+2wh = 2(l+w)h.

Part 2. (for squared room but rectangular walls)

[ A room is squared, but its height is not a side of the square, then we calculate the area of the four walls. ]

There are four walls with height h on the length l, and thus the area of these four walls = 4hl.

Part 3. (for squared room and squared walls)

[ A room is squared, that is, its walls are also squared, then we calculate the area of the four walls. ]

There are four walls with height l on length l, and thus the area of the four walls is 4ll = 4l².

Read more on Brainly.in

The area of a square is 81cm. Find its perimeter.

https://brainly.in/question/14979190

The length and breadth of a rectangular garden are 95 m and 74 m respectively. A path 4m wide is constructed outside and...

https://brainly.in/question/14893069

#SPJ3