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30 Oct 2018, 02:37
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
78% (01:01) correct
22%
(00:55)
wrong
based on 125
sessions
History
Date
Time
Result
Not Attempted Yet
If the diameter of circle A is eight times that of circle B, what is the ratio of the area of circle A to the area of circle B?
A. 4:1
B. 8:1
C. 16:1
D. 32:1
E. 64:1
A. 4:1
B. 8:1
C. 16:1
D. 32:1
E. 64:1
30 Oct 2018, 03:10
Kudos
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Bunuel
\(\frac{D_A}{D_B} = \frac{8}{1}\)
Ratio of Areas \(= (\frac{D_A}{D_B})^2\)
i.e. \(\frac{Area of A}{Area of B} = (\frac{8}{1})^2 =\frac{64}{1}\)
Answer: Option E
31 Oct 2018, 04:50
Kudos
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GMATinsight
I dont know how I messed this up but radius is half of diameter. So in the area ratio why is it not taken as half?
