⑴8人进行乒乓球比赛,如果每两人之间都比赛一场,一共比赛28场。
⑵王叔叔把10000元人民币存入银行,定期一年,年利率是2.25%。一年后他可得利息225元。
⑶山羊只数比绵羊多25%,也就是绵羊只数比山羊少25%。
计算:如图(1),把AB分成两条相等的线段,每个圆的周长 ;
……
结论:把大圆的直径分成n条相等的线段以每条线段为直径分别画小圆,那么每个小圆周长是大圆周长的.
请依照上面的探索方法和步骤,计算推导出每个小圆面积与大圆面积的关系.
— I went to Beijing.
A. Who did you go with? B. What did you do? C. How was your holiday? D. Where did you go over the holiday? E. How did you go there? |
Amy: Hi,Susan. How are you?
Susan: I'm fine, Amy. It was great, thank you.
Amy:
Susan: I went to Beijing.
Amy:
Susan: I went there with my parents.
Amy:
Susan: We went there by plane.
Amy:
Susan: We visited the Great Wall and the Forbidden City.