Respuesta :

gcantiga44

Answer:

√19 or 4.36

Step-by-step explanation:

Since one leg is missing, you need to use Pythagorean theorem for this.

The hypotenuse is known so,

c² - a² = b²

c = 10

a = 9

b = ?

10² - 9² = b²

100 - 81 = b²

19 = b²

b = √19