Calculate the critical mass for a cylinder of pure U(noO2) with the following properties. (ignore the extrapolation length in this calculation) It may be useful to do this in MATLAB so part 7 is easier. Height =30cm Enrichment in U-235 =100% Density =19.1g/cm3 Average number of neutrons released per fission =2.65 Microscopic fission cross section =1.235b Microscopic absorption cross section =1.335b Microscopic elastic scattering cross section =4.566b Total microscopic kross section =7.705b D=3tr1=3s(1)1=3A2