Question

Find the total area of four wallas of rectangular room has length= 10 m breadth= 5 m height= 4m​

Answer 1

Answer:

120m sq

Step-by-step explanation:

area of four walls means lateral surface area

= 2× (l+b) × h

= 2× (10+5) × 4

= 2× 15× 4

= 120m sq

hope it helps you

Answer 2

Answer:

Total Area of all Walls = $120m^{2}$

Step-by-step explanation:

We know that the length of the room is 10m and so is the breadth equal to 5m. and height of 4m. I'm dividing the solution into 2 parts for Easy Understanding.

1 ) We can Safely know that the longer side of the room, is also the length of the longer wall of the room, which is 10m, having a height of 4m.

The wall having different proportions is also a Rectangle i.e 4m and 10m

Area of Rectangle = Length x Breadth

                              = 10m x 4m

                              = $40m^{2}$

Now since the room consists of 4 walls, and is a Rectangle, then there will be 2 walls that will have an area of $40m^{2}$, right opposite to each other. Now,

Total Area of Longer Side walls of Room (2) = $40m^{2} +40m^{2}$

                                                                         = $80m^{2}$ - (i)

2 ) We know that the Breadth of the Room is 5m, which can be Considered the Length of the Shorter side of the Room! With a height of 4m. Using the Same Procedure Above:

Area of Rectangle = 5m x 4m

                               = $20m^{2}$

Now, $20m^{2}$ will be the Area of 2 sides of Rectangle, which are the Shorter ones.

Total Area of Shorter Side walls of Room (2) = $20m^{2} +20m^{2}$

                                                                          = $40m^{2}$ - (ii)

Now the Final Area of all Walls:

To have the Area of all 4 walls, We will add the answers (i) and (ii), as marked above to get the desired result which is as such:

The total area of all 4 walls = Total Area of Shorter Side walls of Room (2) +

                                                Total Area of Longer Side walls of Room (2)

Total Area = $80m^{2} +40m^{2}$

                 = $120m^{2}$

Apologies for the lengthy Explanation, and do correct me if this is not the answer.