KöMaL 2025 K860

Anna and Boglárka are playing on a circular table of diameter $1.5$ meters. Anna places her rectangular piece of paper of dimensions $42\times 30$ cm, and then Boglárka places her identical piece of paper such that two papers are not completely covering each other, but share a diagonal with each other, and neither hangs off the edge of the table. Find the percentage of the table covered by the two pieces of paper.