Question

the lenght of a hall is 20m and its width is 12m . the sum of the areas of the floor and the flat roof is equal to the sum of areas of the four walls. find the height of the wall.
the first one with proper answer will get brainliest ​

Answer 1

area of four walls = 2(l+b).h

area of roof and floor = lb + lb = 2 lb

a/c to question ,

2(l+b).h = 2lb

(l+b)h = lb

(20+16).h = 20×16

36h = 320

h = 320/36 =80/9 = 8.89m

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