A Right Triangle Has A Hypotenuse Of 13 Cm And One Leg That Measures 12 Cm. What Is The Length Of The Other Leg?

In a right triangle, the sum of the squares of the lengths of the legs equals the square of the length of the hypotenuse. If a and b are the lengths of the legs and c is the length of the hypotenuse then:
c² = a² + b²
a²= c² - b²
b²= c² – a²
c=13, a=12, b= ?
b²= c² – a²
b²= 13²-12²
b²= 169-144
b²= 25 (take a square root of both sides, b squared and 25 squared.)

b= 5