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16 Jun 2020, 11:05
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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:
45%
(medium)
Question Stats:
68% (02:17) correct
32%
(02:57)
wrong
based on 47
sessions
History
Date
Time
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Not Attempted Yet
Two semi-circles are drawn on adjacent sides of a square with side length 1 as shown above. What is the area of the shaded region?
A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4
Are You Up For the Challenge: 700 Level Questions
Attachment:
2020-06-16_2204.png [ 41.75 KiB | Viewed 2830 times ]
16 Jun 2020, 11:15
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Bunuel
Attachment:
Screenshot 2020-06-16 at 11.43.06 PM.png [ 36.51 KiB | Viewed 2554 times ]
Area of shaded region = Area of half of square - 2x + 2x = Area of half of square = 1/2
IMO C
General Discussion
16 Jun 2020, 14:00
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Kinshook
great visualisation.
i was fighting to calculate this little leaf . now i see it just comletes the triangle to half of the circrle.
i am with you: 1/2
is there a mathematical way to calculate the "leaf" area?
great visualisation.
i was fighting to calculate this little leaf . now i see it just comletes the triangle to half of the circrle.
i am with you: 1/2
is there a mathematical way to calculate the "leaf" area?
