Subject: General Aptitude · Chapter: Area · Exam: 2007 · Marks: · Difficulty:
Is the area of circular region X greater than the area of circular region Y ? I. The circumference of X is greater than the cir- cumference of circle Z and the circumference of Z is less than the circumference of Y. II. The radius of X is greater that the radius of Y.
Answer
SELF-PRACTICE — the source book printed no answer.
Nothing is invented here, so this question has no answer on record.
Explanation
I. From the given information, the circumference of circles x and y and hence their radii cannot be compared. II. $r_{X}>r_{Y} \Rightarrow \pi r_{X}^{2}>\pi r_{Y}^{2} \Rightarrow$ area of circle $X>$ area of circle Y Thus, II alone gives the answer. ∴ Correct answer is (b).
Explanation as extracted from the printed page; notation may be imperfect.