I need help on how to do this my teacher cant teach

Question

how do i get this answer?? please walk through step by step

Solve for the missing side. a=4, b=3, c=?

Answer 1

I'm assuming that you have a right triangle.

use the Pythagorean Theorem

c^2=a^2+b^2 where c=hypotenuse, a=one leg, b=second leg

c^2=4^2+3^2

c^2=16+9

c^2=25

√c^2=√25

c=5