x
16
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
17
256
259.21
262.44
265.69
268.96
272.25
275.56
278.89
282.24
285.61
289
(1) ; .
(2)272.25的平方根是 ;
(3)若a,b是表中两个相邻的数,ab,则a= , b= .