Question

Please help ASAP giving all 14 of my points!!!

Answer 1

The 81 area square has a side of 9.

The square with perimeter 48 must have side 48/4=12.  

So we have a right triangle with legs 9 and 12.  That's 3 times the usual 3/4/5 right triangle so x must be 3×5=15.

Answer: 15