Area Problems
A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is:

Rs. 458
Rs. 558
Rs. 456
Rs. 568

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Area Problems
The radius of a circle is increased so that its circumference increase by 5%. The area of the circle will increase by?

10.25 %
10 %
10.5 %
8.75 %

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