Question

length of box is 100cm, breadth 60cm, height 40cm, find area of four walls
plz tell me ​

Answer 1

Answer:

12800 cm^3

Step-by-step explanation:

Area of four walls = 2(bh + hl)

= 2(60 X 40 + 40 X 100)

= 2(2400 + 4000)

= 2(6400)

= 12800 cm^3

Answer 2

Area of 4 walls of a cuboid = LSA of cuboid

( it is a cuboid because the l , b , h all have different measures )

( LSA => Lateral surface area )

LSA of cuboid = 2h (l+b)

h = 40 cm , b = 60 cm , l = 100 cm

LSA = 2 × 40 ( 100 + 60) = 80 × 160 = 12800 cm²

hope it helps !!