Question

find the area of four walls of a room whose length is 3.5m and breadth 2.5 and height 3m

Answer 1

Area of four walls = 2(length+breadth)× height
______________________________

Area of four walls = 2(3.5+ 2.5) × 3 

Area of four walls = 6× 6 

Area of four walls = $12m^2$



i hope this will help you



-by ABHAY

Answer 2

l=3.5m
b=2.5
h=3m
area of four walls=L.S.A the room
                            =2x(l+b)xh
                             =2x(3.5+2.5)x3
                               =2x6x3
                                 =36m^2