GRE
The side of the square
The side of the triangle
The area of trapezoid ABCD
The area of △EGH
The area of the circle
One-half of the area of the square
$$\frac{π}{4}$$
$$\frac{l}{n}$$
$$\frac{π}{2}$$
The perimeter of the circle
The perimeter of the square
The area of the shaded region
The sum of the areas of the two unshaded semicircular regions
The area of the blue region
The sum of the yellow region
-x
-y
25000 +道题目
245本备考书籍