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GRE Math Challenge #10- Q is a point on the circle whose
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Updated on: 30 Mar 2018, 03:25
Updated on: 30 Mar 2018, 03:25
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Question Stats:
78% (00:27) correct
21% (00:25) wrong based on 23 sessions
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In the figure below, Q is a point on the circle whose centre is O and whose radius is r, and OPQR is a rectangle. What is the length of diagonal PR?
A \(r\)
B \(r ^2\)
C \(r ^2/\pi\)
D \(r \sqrt{2}/\pi\)
E Cannot be determined from given information
Re: GRE Math Challenge #10- Q is a point on the circle whose
[#permalink]
29 Mar 2018, 20:34
29 Mar 2018, 20:34
sandy wrote:
Attachment:
figure 7.jpg
In the figure below, Q is a point on the circle whose centre is O and whose radius is r, and OPQR is a rectangle. What is the length of diagonal PE?
A \(r\)
B \(r ^2\)
C \(r ^2/pi\)
D \(r \sqrt{2}/pi\)
E Cannot be determined from given information
There is a typo in the stem, diagonal PR not PE.
Re: GRE Math Challenge #10- Q is a point on the circle whose
[#permalink]
31 Mar 2018, 21:25
31 Mar 2018, 21:25
OPQR is a rectangle with diagonals OQ and PR.
the length of diagonal OQ is equal to radius of circle i.e. r.
since the diagonals of rectangles are equal in length , thus
PR=OQ=r.
Ans :a
the length of diagonal OQ is equal to radius of circle i.e. r.
since the diagonals of rectangles are equal in length , thus
PR=OQ=r.
Ans :a
