To find the hypotenuse \( c \) of a right triangle using the Pythagorean Theorem, you can use the formula:
\[ c = \sqrt{a^2 + b^2} \]
where \( a \) and \( b \) are the lengths of the two legs (bases) of the triangle.
Given:
- \( a = 3 \) cm
- \( b = 4 \) cm
Now, plug in the values:
\[ c = \sqrt{3^2 + 4^2} \] \[ c = \sqrt{9 + 16} \] \[ c = \sqrt{25} \] \[ c = 5 \text{ cm} \]
Thus, the hypotenuse \( c \) is \( 5 \) cm.