问题
填空题
一个圆心角是120°，半径为3厘米的扇形面积是______平方厘米．
答案
×3.14×32，120 360
=
×3.14×9，1 3
=9.42（平方厘米），
答：这个扇形的面积是9.42平方厘米．
故答案为：9.42．
搜题请搜索小程序“爱下问搜题”
一个圆心角是120°，半径为3厘米的扇形面积是______平方厘米．
×3.14×32，120 360
=
×3.14×9，1 3
=9.42（平方厘米），
答：这个扇形的面积是9.42平方厘米．
故答案为：9.42．
It is interesting to visit another country, but there are some problems when you don’t know the 1 very well. It may be 2 to talk with the people there. We may not know how to use the telephone in the country that we are visiting. We may not know how to buy 3 we need. In a 4 country we might not know where to eat or what to order in a 5 . It is not easy to decide how 6 to tip waiters or taxi drivers. When we need help, we might not know how to ask for help. It is not pleasant to have an experience 7 that. 8 a short time, however, we learn what to do and what to 9 . We learn to enjoy life in another country and then we may be 10 to leave.
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