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14 Nov 2017, 23:42
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
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Question Stats:
79% (01:44) correct
21%
(01:44)
wrong
based on 63
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If the circumference of circle P is 15.174 and the circumference of circle Q is 6.28, then the diameter of circle P minus the diameter of circle Q is approximately equal to
(A) 1.5
(B) 3.0
(C) 5.5
(D) 9.0
(E) 9.4
(A) 1.5
(B) 3.0
(C) 5.5
(D) 9.0
(E) 9.4
15 Nov 2017, 00:48
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P-Q=15,174/6,28 - 6,28/6,28~(15-6)/6~1,5
Answer A
Answer A
15 Nov 2017, 01:08
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Bunuel
Let x be the radius of the circle P and y the radius of the circle Q.
2 * Pi * x = 15.174
2 * Pi * y = 6.28
2x - 2y = 1/Pi * (15.174 - 6.28) = 8.894/3.14 which is approximately 3
Therefore, the difference in diameters of both the circle is 3.0(Option B)
