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Find the central angle of each of the sectors whose measures are given below. \(\left(\pi = \frac{22}{7}\right)\)
 
(i) area \(= 462 \ cm^2\), \(r = 21 \ cm\)
 
Answer:
 
\(\theta =\) i°
 
(ii) length of the arc \(= 44 \ m\), \(r = 35 \ m\)
 
Answer:
 
\(\theta =\) i°