一个圆柱和一个圆锥，如果它们的底面积和体积分别相等，当圆柱的高是6厘米时，那么圆锥的高是______厘米；如果它们的高和体积分别相等，当圆锥的底面积是6平方厘米时，那么圆柱的底面积是______平方厘米．
（1）6S=
Sh，1 3
h=18（厘米），
（2）Sh=
×6h，1 3
S=2（平方厘米）；
答：圆锥的高是18厘米，圆柱的底面积是2平方厘米．
故答案为：18、2．
从方框里选择合适的单词(词组)并用其正确形式填空，完成下面的对话。
Diana: Yes, I did. But I felt sorry for the tiger. Eric: So did I. The tiger’s family members 小题1: because of an illness. Diana: And he had to live 小题2: when he was 2 years old. He 小题3: without his parents’ care and love. Eric: The tiger must have gone through a bad time. Diana: Yes. And I just think it is cruel (残忍) of people to make it perform for us. Tigers should live 小题4: . Eric: That’s true. Tigers should live a quiet and小题5: life in forests. Diana: But the fact is, how can a tiger find a suitable home outside zoos? |