The idea is to convert your cell arrays to tall matrices or column vectors. That could be done prior to entering the values into table() or it can be done as you enter the values into table() (shown below).
T = table([C_row{:}].',[C_area{:}].',cell2mat(C_centroid),cell2mat(C_boundingbox));
T.Properties.VariableNames = {'row' 'Area' 'Centroid' 'BoundingBox'}
View results
head(T)
ans =
8×4 table
row Area Centroid BoundingBox
___ ____ ________________ ______________________________
1 145 5.9448 35.028 0.5 21.5 13 23
2 127 6.4803 62.087 0.5 52.5 13 17
3 71 2.1408 85.099 0.5 72.5 4 24
4 187 4.615 117.65 0.5 102.5 10 29
5 160 9.4563 141.29 0.5 132.5 20 16
6 86 4.0581 179.23 0.5 170.5 8 15
7 182 11.758 205.15 0.5 199.5 23 11
8 60 6.3833 222.33 0.5 218.5 15 9