某社区想扩建一片长方形绿地，如果长增加6米，面积就增加30平方米；如果宽增加3米．面积就增加24平方米，这片绿地的面积是多少平方米？

A. May I help you ?
B: Yes, please. I’d like the blue pants. Can I ____  them on?
A: Sure. Wow! They look very nice ____  you.
B: But I think ____  too small.
A: How do you like this ____ of pants?
B: Let me see. Oh, they are OK . How much are they?
A：They are 390 yuan.
B: 390 yuan ? Are you ____ ? I’ll think about them. Thank you all the same.

2.9653按“四舍五入法”保留整数是____，保留一位小数是____．

____（?）