Annular Bounds for the Zeros of a Polynomial

Table 1

Theorems			Area of the annulus
5	0.4641	1.6984	8.382
7	0.6542	1.205	3.2159
8	0.5192	1.5183	6.395
10	0.5833	1.20	3.4549
11	0.7757	1.0164	1.3553
12	0.6403	1.2313	3.4748
14	0.4886	1.6134	7.428