Area Problems
The radius of a circle is so increased that its circumference increased by 5%. The area of the circle, then increases by

11.25%
12.5%
10.5 %
10.25%

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Area Problems
The area of rectangle is 1.8 times the area of a square. The length of the rectangle is 5 times the breadth. The side of the square is 20 cm. What is the perimeter of the rectangle?

145 cm
133 cm
135 cm
144 cm

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