题目

一条长64 cm的铁丝被剪成两段，每段均折成正方形．若两个正方形的面积和等于160 cm2，求两个正方形的边长． 答案：设一个正方形的边长为x cm，根据题意，得 x2＋()2＝160. 解得x1＝12，x2＝4. 答：两个正方形的边长分别为12 cm和4 cm.— Do you mind my opening the window? It's a bit hot in here. — _____, as a matter of fact... [     ]A. Go ahead B. Yes, my pleasure  C. Yes, I do D. Come on