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16 Apr 2013, 16:49
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N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
(N/A)
Question Stats:
80% (00:31) correct
20%
(01:12)
wrong
based on 17
sessions
History
Date
Time
Result
Not Attempted Yet
Area of a rectangle inscribed in a circle of radius r
A 2r
B 2r^2
C 3r^2
D 4r
E none of these
A 2r
B 2r^2
C 3r^2
D 4r
E none of these
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16 Apr 2013, 20:24
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Interesting question!!!!!!!
For me i will assume this rectangle to be a square then Area diagonal = 2*r
=> side = \(\sqrt{2* r}\)
area = \(2*r^2\)
so my rectangle has a area less than \(2*r^2\)
it can't be A) 2r (diagonal is itself 2r so area must be greater than this)
B) is out
C) is out : greater than B value
D) is out :is side will be some value*r => area should be in terms of \(r^2\)
E) Last option- so correct
IMO: E
For me i will assume this rectangle to be a square then Area diagonal = 2*r
=> side = \(\sqrt{2* r}\)
area = \(2*r^2\)
so my rectangle has a area less than \(2*r^2\)
it can't be A) 2r (diagonal is itself 2r so area must be greater than this)
B) is out
C) is out : greater than B value
D) is out :is side will be some value*r => area should be in terms of \(r^2\)
E) Last option- so correct
IMO: E
17 Apr 2013, 00:03
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If a rectangle is inscribed in a circle its diagonal= 2*radius
To calculate tha area of an iscribed rectangle the diagonal is not sufficient however
Look at the image
IMO E
To calculate tha area of an iscribed rectangle the diagonal is not sufficient however
Look at the image
IMO E
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