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25 May 2018, 01:08
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A
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78% (01:17) correct
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Rectangle ABCD is inscribed in a circle as shown above. What is the radius of the circle?
(1) The length of the rectangle is √3 and the width of the rectangle is 1.
(2) The length of arc AB is 1/3 of the circumference of the circle.
Attachment:
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25 May 2018, 01:14
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Bunuel
(1) We can find the diagonal of the rectangle (\(d=2\)). Radius of the circle is half the diagonal (\(r=1\)). Sufficient.
(2) Here we have only relative values. Insufficient.
Answer: A
06 May 2020, 10:31
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But how do we know that the diagonal passes through the center of the circle?
