Question

The area of four wall in a room is 120 sq. m. The length is twice the breadth. If the height of the room is four metre find the area of the floor

Answer 1

Let breadth be x m
So, length = 2x m

So, 2*4*(2x+x) = 120
or, 3x = 15
or, x = 5

So, area of floor = 5*(2*5)m^2 = 50m^2

hope this helps you out!

Answer 2

Given,

Area of four wall room=120 sq m

Requirements:

Are of floor=?

Let assume,

h = height

l = length

b =breadth

Let suppose,

breadth of wall is X m

and length of wall is twice of X m

Length =2*X m

so that ,

2*4*(2X+X)=120

8(3X)=120

3X=15

X=5

value of X is 5

so that area of floor would be,

Area=X*(2*X)

Area=5*2*5

Area=50 sq m

or area of floor is 50m²