CMAT 2024 Quant Based LR — Previous Year Question

Find the missing term in the following figure?

(Figure: three "plus-sign"/cross-shaped figures, each with a number in a center circle and 4 numbers at the arm-tips: top, left, right, bottom. Cross 1, a reference/example: top=9, left=169, right=36, bottom=64, center=6. Cross 2, a reference/example: top=16, left=36, right=49, bottom=9, center=4. Cross 3, the actual question, whose center is the unknown "?" to find: top=81, left=121, right=100, bottom=25, center=?.)