The length and breadth of a rectangular piece of a land are in a ratio 5 : 3. The owner spent Rs. 6000 for surrounding it from all sides at Rs. 7.50 per metre. The difference between its length and breadth is
A50 m
B100 m
C150 m
D250 m
A50 m
B100 m
C150 m
D250 m
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The area of square is and the radius of circle is of the length of a side of the square. what is the ratio of the perimeter of the square and the circumference of the circle ?