physics Multigroup diffusion theory

We have listed in Table 7-2 typical group constants characterizing a PWR (in both two-group and four-group forms). Calculate the multiplication factor of a PWR core of height 370 cm and diameter 340 cm using two-group diffusion theory. TABLE 7-2 Few-Group Diffusion Theory Constants for a Typical PWR Reactor Core Two-Group Four-Group Group Constant 1 of 2 2 of 2 1 of 4 3 of 4 3 of 4 4 of 4 .008476 .18514 009572 .001193 .01768 . 18514 M .003320 .07537 .003378 .0004850 .006970 07527 .01207 .1210 .004946 002840 .03053 . 1210 D 1.2627 .3543 2.1623 1.0867 .6318 .3543 ER 02619 .1210 .08795 .06124 .09506 .1210