Question

The cost of papering the four wall of the room at the rate of 1.50 per square is rupees 33 7.50 if the height of Rome is 5 metre and ratio of its length and breadth 4 :1 find the value of room

Answer 1

Answer:

is value required?

but b=4.5m

L=18m

Step-by-step explanation:

cost is 337.50

rate is 1.50/sq.m.

so area is 337.5/1.5

=225 sq.m.

=5*(l+b+l+b)

=10(l+b)

so l+b=22.5

or 4b+b=22.5

5b=22.5

b=4.5m

L=4.5*4=18m

Answer 2

The value of room is 18 m and 4.5 m.

Step-by-step explanation:

Since we have given that

Total cost = Rs. 337.50

Cost per square meter = Rs. 1.50

So, Area = $\dfrac{Total\ cost}{Cost\ per\ m^2}=\dfrac{337.50}{1.50}=225$

Height of room = 5 m

Length : Breadth = 4:1

So, Length = 4x

Breadth = x

According to question, it becomes,

Area of four walls = $2(l+b)\times h$

$225=2(4x+x)\times 5\\\\\dfrac{225}{5}=2\times 5x\\\\45=10x\\\\x=4.5\ m$

Hence, the length = 4x = $4\times 4.5=18\ m$

Breadth = x = 4.5 m

Hence, the value of room is 18 m and 4.5 m.

# learn more:

The Length breadth and height of a room are 5 metre for metre and 3 metre respectively find the cost of whitewashing the walls of the room and the ceiling @ rupees 7.50 per metre square ​

https://brainly.in/question/13001517