Question

If(l-60)m=(b+20)m=(h+25)m=60m,then the area of 4 walls of the room is

Answer 1

Answer:

11200m²

Step-by-step explanation:

l - 60 = 60 so l = 60 + 60 = 120

b + 20 = 60 so b = 60 - 20 = 40

h + 25 = 60 so h = 60 - 25 = 35

area of 4 walls means lateral surface area

lsa = 2h(l+b)

= 2 × 35 ( 120 + 40)

= 70 × 160

= 11200 m²