Question

please answer with explanation:))




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

Answer 1

Answer:

The length of a hall is 18m and the width 12m. The sum of the areas of the floor and the flat roof is equal to the sum of the areas of the four walls. Find the height of the hall in m.

ANSWER

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