Question

The length of a cinema hall is 20m and its width is 16m the sum of the area of its floor and the flat roof is to the surface area of its four walls. find the volume and height of the hall​

Answer 1

Answer:

8.89m is the answer.

Step-by-step explanation:

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

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 =80/9 = 8.89m