如果圆柱的高为4cm，底面半径为3cm，那么这个圆柱的侧面积是______cm2
根据侧面积公式可得π×2×3×4=24πcm2．
用所给单词的适当形式填空。
1.My mother always ________ (cook) meat for me.
2.He is ________ (read) a book in the living room now.
3.Let's________ (make) a big cake.
4.I always________ (wash) dishes for my mother.
5.He wants to be a ________ (drive) in the future.
定金须于合同成立之前交付，合同成立后交付的，是价款。( )
