Question 1068074
If you choose the 4 inch cut to be made from the 28 inch side you can make 
{{{28/4=7}}} cards in that direction and 
{{{25/6=4&1/6}}} or 4 cards in the other direction for a total of,
{{{N[1]=7*4=28}}}

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If you choose the 4 inch cut to be made from the 25 inch side you can make 
{{{25/4=6&1/4}}} or 6 cards in that direction and 
{{{28/6=4&4/6}}} or 4 cards in the other direction for a total of,
{{{N[2]=6*4=24}}}
So the greater is 28.