I mentioned in the OP that I was still working on the code in order to get the output as I would like it to present. But here's the code in a proper format:

    use strict;
    use warnings;

    my @points = ( {X=>79.620,   Y=>54.720, Z=>53.034},
                   {X=>81.822,   Y=>54.071, Z=>50.027},
                   {X=>83.871,   Y=>51.966, Z=>52.424}, 
                   {X=>80.927,   Y=>49.712, Z=>53.305},
               {X=>80.565,   Y=>46.114, Z=>52.104},
                   {X=>77.173,   Y=>45.173, Z=>50.689},
                   {X=>75.652,   Y=>41.722, Z=>51.009});

    my @results;

    for my $x(0..$#points){
       my $p1 = $points[$x];
       for my $y (0..$#points){
        my $p2 = $points[$y];
        my $dist = sqrt(abs(( $p1->{X} - $p2->{X} ) **2
                 + ( $p1->{Y} - $p2->{Y} ) **2
                 + ( $p1->{Z} - $p2->{Z} ) **2)) ;  
        $results[$x][$y] = sprintf("%.0f", $dist);
       }
    }
    #-------------------

    for my $r (@results){
       printf "%.0f\t",$_ for @$r;
       print "\n";
     }
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