Question 307230
side 1 = 4 in
side 2 = 3 in

using pythagoras theorem 

side1^2 +side2^2= hypotenuse ^2

3^2 +4^2 = hypotenuse^2

9+16= hypotenuse^2

25 = hypotenuse ^2

Take square of both sides

5 inch = hypotenuse