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14 Feb 2016, 03:06
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
51% (01:40) correct
49%
(01:22)
wrong
based on 77
sessions
History
Date
Time
Result
Not Attempted Yet
What is the radius, in inches, of Circle O?
(1) Arc x is 1⁄16 of the circumference.
(2) Area of the shaded region is 3,600⁄π square inches.
Attachment:
2016-02-14_1404.png [ 7.56 KiB | Viewed 2887 times ]
Mo2men
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15 Feb 2016, 03:42
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Arc length= 30, then.......... 2πr (n/360)=30......πr (n/360)=15
1) Arc X/circumference =1/16.............30/2πr = 1/16 .........r =240/π Suf
2) Arc area = πr^2 *n/360 ....3,600⁄π= 15r.....r = 240/π Suf
Answer: D
1) Arc X/circumference =1/16.............30/2πr = 1/16 .........r =240/π Suf
2) Arc area = πr^2 *n/360 ....3,600⁄π= 15r.....r = 240/π Suf
Answer: D
15 Feb 2016, 04:50
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Mo2men, I don't quite get how you went from πr^2 *n/360 to 15r for statement B.
Would you care to elaborate please?
Edit// Okay, I got it. No explanation necessary
Would you care to elaborate please?
Edit// Okay, I got it. No explanation necessary
