The area of square ABCD above is 20. The shaded region is the intersection of the square and a circular region centered at C. What is the area of the shaded region? Choose the correct choice from the following answers:	A) 18−9/4∗π	B) 18−10/2∗π	C) 9+9/4∗π	D) 9+9/2∗π	E) 9/2−9/4∗π
=Square - Quarter circle   =20- pi*20/4   =20- pi*10/2   ANSWER:18−10/2∗π
<result>B</result>
The area of square ABCD above is 20. The shaded region is the intersection of the square and a circular region centered at C. What is the area of the shaded region?