What is the cross section area (cm 2) for the moment of intertia in torsion (j) (cm 4) 2.54?
create table table_2071644_1 (cross_section_area__cm_2__ varchar, moment_of_inertia_in_torsion__j___cm_4__ varchar, PRIMARY KEY (cross_section_area__cm_2__))
select cross_section_area__cm_2__ from table_2071644_1 where moment_of_inertia_in_torsion__j___cm_4__ = "2.54"