Question

the length of a wall is 20 m and width 12m. the sum of the areas of the floor and the roof is equal to the areas of the four wall . find the height and volume of the wall​

Answer 1

Step-by-step explanation:

Let the height of the hall be h metres

We have, l=18m and b=12m

Now,

Sum of the areas of the floor and roof = Sum of the areas of four walls

2lb=2(l+b)h

lb=(l+b)h⇒ h=

l+b

lb

=

18+12

18×12

=7.2m