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17 Jan 2019, 03:59
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C
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Difficulty:
15%
(low)
Question Stats:
92% (01:03) correct
8%
(01:12)
wrong
based on 32
sessions
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If the radius of the circle above is 6, then what is the area of the shaded region?
A 18
B 36
C 9π – 18
D 18π – 18
E 18π − 36
Attachment:
2019-01-17_1457.png [ 9.62 KiB | Viewed 2278 times ]
17 Jan 2019, 04:24
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Bunuel
Please refer the affixed diagram,
Area of the shaded region=\(\frac{1}{4}\)*(Area of circle-Area of square ABCD)
=\(\frac{1}{4}*[π*6^2-({6\sqrt{2}})^2]\)=9π-18
Ans. (C)
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Area.JPG [ 32.63 KiB | Viewed 2033 times ]
17 Jan 2019, 06:06
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Bunuel
Area of the shaded region = Area of sector - Area of right angled triangle
Area of sector = \((90/360)π r^2\) = \((1/4)πr^2\)
Area of right angled triangle = 1/2(6)(6)= 18
C) 9π – 18
