Find the area of four wall of room, if length is 8m, breadth is 6m and height is 3m.
Considering a cuboid with top and bottom surfaces removed... I.e it forms the four walls.
Now the inner surface area = 3*8*4//height * length * no.of walls= 96m²
Now the outer surface area.
//outer length = 8+6+6=20m//
Total surface area= 96+240
What is its formula?