Question

Answer now please I am in danger​

Answer 1

perimeter of shaded region =(perimeter of large semicircle of radius 9-perimeter of semicircle of radius 6)+perimeter of semicircle of radius 3

perimeter of shaded region=(18π-12π)+6π

so perimeter of shaded region=12π

Answer 2

Area of shaded region
Area of circle- Area of semi circle
Pie r(square) - pie r(square)/2
22x6x6x/7. - 22x6x6/7x2
792/7 - 396/7
113.14- 56.57
56.57