UPSKILL MATH PLUS

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1. Find the area of a sector of circle of radius \(21 \ cm\) and central angle \(120^\circ\).
 
Area of the sector \(=\) \(cm^2\)
 
2. In figure, a circle of radius \(7.5 \ cm\) is inscribed in a square. Find the area of the shaded region. 
YCIND_240408_6170_circle_A4.png
 
Area of the shaded region \(=\) \(cm^2\)
 
[Note: Enter the answer upto three decimal places]