2163修约至小数点后两位为（)A.2.23B.2.22C.2.24D.2.20E.2.212.2349修约至小数点后两位为（)A.2.

2163修约至小数点后两位为()A.2.23

B.2.22

C.2.24

D.2.20

E.2.21

2.2349修约至小数点后两位为()A.2.23

B.2.22

C.2.24

D.2.20

E.2.21

2.2254修约至小数点后两位为()A.2.23

B.2.22

C.2.24

D.2.20

E.2.21

2.2150修约至小数点后两位为()A.2.23

B.2.22

C.2.24

D.2.20

E.2.21

请帮忙给出每个问题的正确答案和分析，谢谢！