Use List::Util's min and max:

perl -Mstrict -MList::Util=min,max -E '
my @test_array = (3,6,,7,6,3,10,5,6,2, 10);
say "Min: " . min @test_array; say "Max: " . max @test_array;
'
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Output:

Min: 2
Max: 10
[download]

Hope this helps!

Please edit the title of your post as you seem to mean "array" not "area", thanks.