Subject: mathqa
Question: if o is the center of the circle in the figure above and the area of the unshaded sector is 5 , what is the area of the shaded region ?
Option: 
A: 20', 'd ) 25', 'e ) 30']
B: 30']
C: 25 / √ π', 'b ) 30 / √ π', 'c ) 20', 'd ) 25', 'e ) 30']
D: 25', 'e ) 30']
Answer: D