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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Area Problems
The area of circle inscribed in an equilateral triangle is 154 sq cm. What is the perimeter of the triangle?

21 cm
21?3 cm
42 cm
42?3 cm

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