IF it is assumed that the area in question is a rectangle, then the longest line segment that will fit in it is the diagonal. Then, by Pythagoras's Theorem, its length will be sqrt(272 + 212) = 34.21 cm (approx.)
However, if it not a rectangle, all bets are off.
A parallelogram with sides of 27 and 21 will accommodate a line segment that is a fraction short of 27+21 = 48 cm.
A line segment
An edge is an area of a 3D figure where two faces meet to form a line segment.
Figure
a line is a 2D figure.
Maybe line segment.
a line segment has no area. By definition a line segment is a part of a line, thus it has no area
A line is longer.!?!
A line segment is a specific length. A line goes on forever in both directions.
A line segment
10 units.
An edge is an area of a 3D figure where two faces meet to form a line segment.
Figure
bisector
Everything
a line is a 2D figure.
Maybe line segment.
The Answer Is 9.5