Question

Please help, it's on Pythagoras theorem!​

Answer 1

C squared = a squared+ b squared (formula)

so therefore
(c longest side) (this is your x)
(a and b shorter sides).

C squared = 5 squared + 3 squared
C squared = 25 + 9
C squared = 31

Then you find the square root of c (which is just getting rid of the squared sign) and the square root of 31 And that is your answer

Hope this helps!!