Answer:
,
, or
. See Step-by-step explanation.
Explanation:
A square's surface area is
or
square inches. There are
faces exposed to air so
or
square inches are exposed to air.
Or... in a literal sense, all of the faces are exposed to air, so
or
square inches are exposed to literal air.
Or... If air doesn't exist in this figure, then
square inches are exposed to air in this figure.