Previous Year Paper
CAT2005Previous Years Paper
P, Q, S and R are points on the circumference of a circle of radius r, such that PQR is an equilateral triangle and PS is a diameter of the circle. What is the perimeter of the quadrilateral PQSR?
A  
B 

C  
D 

Here, cos30° =
From the diagram cos120° =
a^{2}= 3x^{2}
x = r
Hence, the circumference will be 2r
Hence, answer is (a).
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