Answer:
ok I did it two ways and got different answers
Explanation:
addition
42^2 +69^2= x^2
1,764 +4,761=x^2
1,764 + 4,761= 6,525
Square root of 6,525 is 80.77 or 15/29
subtracting
4,761 -1,764= 2,997
Square root of 2,997 is 54.74 or 9/37
hope one of these are right, good luck