The length of a hall is `20 m`and width`16 m dot` 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 and the volume of the hall.

Explanation

area of four walls = `2(l+b)xxh`
area of roof and floor =` lb + lb = 2 lb`
According to question ,
`=>2(l+b).h = 2lb`
`=>(l+b)h = lb`
`=>(20+16).h = 20×16`
`=>36h = 320`
`=>h = 320/36 `
`=>h=80/9 `
`=>h= 8.89m`