SOLUTION: If the radius of a circle is increased by 100%, then the area is increased by:
(A)100% (B) 200% (C) 300% (D) 400% (E) none of these
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Question 282358: If the radius of a circle is increased by 100%, then the area is increased by:
(A)100% (B) 200% (C) 300% (D) 400% (E) none of these
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
Area=piR^2
Area=pi(2R)^2
Area=pi(4R^2)
Area=pi(4)R^2 Thus the area is increased by a factor of 4 or 400%.
Answer(D) 400%.
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