Question

the length,breadth and height of a rectangular room are in the ratio of 3:2:1.if the room contain 3072 cubic meter air,find the length,breadth and height of the room

Answer 1

Answer:

I HOPE IT IS HELPFUL

Step-by-step explanation:

Let l=3x, b=2x, h=x

Area of four walls =2(l+b)h=2(3x+2x)x=10x

2

Now, l

1

=6x,b

1

=x,h

1

=x/2

New area =2(6x+x)×

2

x

=7x

2

∴ % decrease in area =

10x

2

10x

2

−7x

2

×100=30%