Given that,
Radius of the circle, r = 8.91 cm
Angle, 
To find,
The area of minor sector.
Solution,
The formula for the area of minor sector is given by the formula as follows :

So, the area of the shaded sector is
.
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1(10)+10-1=19
18+1=19
30-11=19
<span>15+4=19</span>