GRE
$$\frac{p+q}{2}$$
$$w$$
The distance between $$Q$$ and the center of the circle
The length of line segment $$PQ$$
The sum of the integers from $$29$$ through $$89$$
The sum of the integers from $$32$$ through $$90$$
The area of the rectangular region
$$50$$
25000 +道题目
269本备考书籍