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CBSE Class 9 Answered

The floor of a rectangular hall has a perimeter of 250m and it's it's length and breadth are in the ratio of 13: 12. If the cost of painting the four walls and ceiling at the rate of ₹5 per metres square is ₹27000, find the height of the hall  
Asked by kart4929 | 05 Mar, 2019, 11:18: PM
answered-by-expert Expert Answer
Perimeter of rectangular hall is 250 m.
Painted area = 250h where h be the height of the wall.
Total cost is 27000 at the rate of Rs. 5 per square metre.
Total area to be painted = 27000/5 = 5400 sq. m
According to the question,
250b = 5400
h = 21.6 m
Answered by Sneha shidid | 06 Mar, 2019, 09:40: AM

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