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Question

The cost of fencing a circular plot at the rate of Rs. 15 per metre is Rs. 3, 300.  What will be the cost of flooring the plot at the rate of Rs. 100 per square metre?


Correct Answer
A
Rs. 3,85,000
Your Answer
B
Rs. 3,50,000
Your Answer
C
Rs. 4,85,000
Your Answer
D
None of these

Solution

The correct option is A Rs. 3,85,000
Total cost of fencing = Rs. 3300
Rate = Rs. 15/metre
Circumference of circular plot,=330015=220  metre
2πr=2202×227×r=220r=220×72×22=35 metre 
Area of the circular plot =πr2
Cost of flooring =3850×100
=Rs.385000

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