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#167:Circular
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Each circle in this sequence increases in size.  What is the radius of the next circle in the sequence, in centimeters, to four decimal places?
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Azad Park 
 
Situated in the centre of a business 
and residential district, Azad Park 
contains a small wood and lake. 
Football pitches at the north end are  
used by the nearby Borfield School 
during the day but are open to the 
public on selected evenings.  The  
park is also popular among runners 
not wuite ready for the trails of 
Polygon Park.
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