Answer :
The area of the rectangle with length L and breadth B is
[tex]A=L\times B\text{ unit squared}[/tex]The length of the given rectangle is 32 m and breadth is 20 m
So, the area is
[tex]\begin{gathered} A=32\times20 \\ =640\text{ meter squared} \end{gathered}[/tex]Hence, the correct option is (A)