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Q.

The floor of a rectangular hall has a perimeter 15 m  . If the cost of painting the four wall at the rate of Rs. 10 per m 2   is 15000, then what is the height of the hall?


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a

2000 m

b

100 m

c

200 m

d

1000 m 

answer is B.

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Detailed Solution

Given- perimeter of the floor of a rectangular hall = 15m.
The cost of painting the four wall at the rate of Rs. 10 per m 2   = 15000.
 Area of four walls =  Cost of four walls   Rate   Area of four walls = 15000 10 Area  =1500  m 2  
Also,
Question ImageThus, the height of the hall is 100m.
Hence, option 2 is the correct option.
 
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