If the radius of a circle is increased by 6%, then the area of the circle is increased by-
Solution
Correct Answer: Option D
Let the radius be 100 Area = pi X 10,000 Area of bigger circle = pi X 106 X 106 = 11236 pi Increase in area = pi ( 11236 -10,000) = 1236 pi Increase percentage = 1236pi/ 10,000pi X 100 = 12.36 % ANSWER
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