Question

the area of four walls of a room is 144msq if the length of the room is thrice its breadth and the hieght is 3m find the area of the floor​

Answer 1

answer:

area of four walls=2(l+b)h

let the breadth of floor be b

length=3b

2(b+3b)3=144

2*4b*3=144

24b=144

b=144/24

b=6m

l=6*3

=18m

area of floor=18*6

=128m²

plssssss mark this as branliest

Answer 2

Answer:

108 m²

Step-by-step explanation:

Let the breadth of each wall be 'x', then the length should be '3x'.

Area of 4 walls = 2(length + breadth)*height

⇒ 144 = 2(3x + x)*3

⇒ 144 = 6(4x)

⇒ 144 = 24x

⇒ 144/24 = x

⇒ 6 = x

Area of the floor = length x breadth

                   = 3x * x

                   = 3x²

                   = 3(6)² = 108 m²