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23 Jun 2013, 02:59
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C
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:
83% (01:05) correct
17%
(01:06)
wrong
based on 131
sessions
History
Date
Time
Result
Not Attempted Yet
Attachment:
diagram.png [ 8.07 KiB | Viewed 2651 times ]
(1) FE = EG = 6.
(2) <FEG is 75˚.
Please provide detailed explanation!
23 Jun 2013, 03:55
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fozzzy
Hi
IMO C
perimeter = (angle FEG/360)*Perimeter of circle of radius R + LENGTH OF EF + LENGTH OF EG
Here R= EF =EG
So we need to know 2 unknown things to find out the perimeter
1==>angle subtended at centre
2==>length of radius
statement 1.==> only radius given ...therefore NOT SUFFICIENT
statement 2 ==> only angle is given hence NOT SUFFICIENT .
combining two we can get the answer
HENCE C
KUDOS if it helped
evdo
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24 Apr 2014, 08:47
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blueseas
Shouldn't the perimeter be = Perimeter of circle of radius R - (angle FEG/360)*Perimeter of circle of radius R + LENGTH OF EF + LENGTH OF EG ?
It leads to the same answer though...
