Table schema:
CREATE TABLE table_2071644_1 (cross_section_area__cm_2__ VARCHAR, moment_of_inertia_in_torsion__j___cm_4__ VARCHAR)

Question: What is the cross section area (cm 2) for the moment of intertia in torsion (j) (cm 4) 2.54?
SQL: SELECT cross_section_area__cm_2__ FROM table_2071644_1 WHERE moment_of_inertia_in_torsion__j___cm_4__ = "2.54"