Solution:To find
1.Find the area of all the smallest petals =8xarea of the smallest arc
2.Find the area of all the smallest petals =8xarea of the intermediate arc
3.Find the area of all the smallest petals =8xarea of the biggest arc
4.The area of shaded region =8xarea of the smallest arc+8xarea of the biggest arc-8xarea of the intermediate arc
5.The area of an arc=area of sector-area of the triangle inside =theta/360xx(radiu)^2-1/2x(radius)^2
6.Therefore ,
1.The area of all the smallest petals=2.28cm^2
2.The area of all the medium size petals=9.12cm^2
3.The area of all the largest petals=20.25cm^2
7.The entire shaded area in the figure=2.28cm^2+(20.25cm^2-9.12cm^2)=13.41cm^2(Answer)
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