Why is a triangle whose sides measure 3 cm, 4 cm and 5 cm a right triangle?

a^2+b^2=c^2

Step-by-step explanation:

Based on the pythagorean theorem for right triangle, if you plug in 3 for a, 4 for b, and 5 for c, the equation will be made true, making it a right triangle.

3^2 + 4^2 = 5^2

9 + 16 = 25