问题
填空题
一个圆柱的底面半径是2厘米，高是3厘米，侧面积是______厘米2，体积是______厘米3．
答案
2×3.14×2×3，
=37.68（平方厘米）；
3.14×22×3，
=3.14×4×3，
=37.68（立方厘米）；
答：侧面积是37.68平方厘米，体积是37.68立方厘米．
故答案为：37.68；37.68．
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一个圆柱的底面半径是2厘米，高是3厘米，侧面积是______厘米2，体积是______厘米3．
2×3.14×2×3，
=37.68（平方厘米）；
3.14×22×3，
=3.14×4×3，
=37.68（立方厘米）；
答：侧面积是37.68平方厘米，体积是37.68立方厘米．
故答案为：37.68；37.68．
There are nineteen boys and twenty-eight girls in our class. 1 the boys is English. His 2 is Sam. He is thirteen. Two of the 3 are American. They are twins. 4 names are Lucy and Jane. They are twelve. They are my 5 . All of the other boys and girls are 6 . We all like the English boy and the American girls, 7 they like us, too. We play games together（一起）. We help 8 and they help us. Look, there 9 the twins! They are coming this way. Let’s 10 hello to them.
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