Solve the problems below based on the Ying Yang
A classical Yin–Yang symbol is constructed inside a circle of radius 10 cm.[br]The circle is divided into two congruent regions by two semicircles of radius 5 cm.[br]Inside each region there is a small circle, tangent to the inner arc and lying on the diameter.
1. Find the area of the whole Ying and Yang circle
2. Find the length of one semicircle that separates the Yin and Yang regions.
3. The small circle is tangent to the inner semicircle and has its center on the diameter.[br]Find the area of the small circle.
4. Find the area of one Yin region after removing the small inner circle.
5. Find the ratio between:[b][br][/b] The total length of the two inner semicircles[br] The area of the large circle[br]