Answer
c = 5
Work Step by Step
We will use given data about triangle ABC & Pythagoras Theorem to solve for 'c'-
We know that -
$c^{2} =a^{2} + b^{2}$ ( Pythagoras Theorem)
Therefore -
$c^{2} = (4)^{2} + (3)^{2}$
$c^{2} = 16 + 9$
$c^{2} = 25$
therefore $ c = \sqrt (25)$
c = 5
