human
Identify a unit of area James has answered a question on the area of a trapezium and got an answer of \( 54 \).

Behind the star he has written the units that he used.

\(
54 \, \bigstar 
\)

Which of the following units could be correct? \( \mathrm{km}^{3} \)
gpt
Does not know units of area should be squared