Question
The figure is made up of a four-sided figure and a circle. The area of the four-sided figure is 211 of the area of the circle. Given that 14 of the circle is shaded and the area of the shaded part is 77 cm2 , what is the difference between the area of the circle and the area of the four-sided figure?
3 m

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The figure is made up of a four-sided figure and a circle. The area of the four-sided figure is 211 of the area of the circle. Given that 14 of the circle is shaded and the area of the shaded part is 77 cm2 , what is the difference between the area of the circle and the area of the four-sided figure?