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`        A hall 36 m long and 24 m broad allowing 80 for doors and Windows the cost of papering the wells at rs 8.40 per m2 is rs 9408 find the high of the hall`
2 years ago

## Answers : (1)

Arun
23385 Points
```							length of hall = 36 mand breadth of hall = 24 mLet 'h' be the height of the hall.Now, in papering the wall, we need to paper the four walls excluding floor and roof of the hall.So, area of wall which is to be papered = lh + bh + lh + bh = 2h(l + b)= 2h (36 + 24) = 120 h m2Now, area leaves for door and windows = 80 m2So, the area which is actually papered = (120h- 80) m2Again, the cost of papering the walls at Rs 8.40 per m2 is equal to Rs 9408. (120h - 80)* 8.4 =  9408120h - 80 = 1120120 h = 1200h = 10 m  RegardsArun (askIITians forum expert)
```
2 years ago
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