Question

a hall is 36 m long and 24 m broad allowing 40 m square meters for doors and windows the cost of papering the walls at Rs 8.40 per square meter is Rs 4704 find the hight of the hall

Answer 1

A hall 36 m long and 24 m broad allowing 80...

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 4704 find the high of the hall

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one year ago

Answers : (1)

length of hall = 36 m

and breadth of hall = 24 m

Let '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 m2

Now, area leaves for door and windows = 80 m2

So, the area which is actually papered = (120h- 40) m2

Again, the cost of papering the walls at Rs 8.40 per m2 is equal to Rs 4704

(120h - 40)* 8.4 =  4704

120h - 40 = 560

120 h = 560 +40

120h=600

h = 5

Answer 2

Answer:

length of hall = 36 m

and breadth of hall = 24 m

Let '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 = Ih + bh + lh + bh = 2h(l + b)

= 2h (36 +24) = 120 h m2

Now, area leaves for door and windows = 80 m2

So, the area which is actually papered = (120h-40) m2

Again, the cost of papering the walls at Rs 8.40 per m2 is equal to Rs 4704

(120h40)* 8.4 = 4704

120h 40 560

120 h = 560 +40

120h=600

h=5

Step-by-step explanation:

hope this helps you!