Respuesta :

fnej

Answer:

19.6

Step-by-step explanation:

missing side = a

a² + b² = c²

a² + 20² = 28²

a² + 400 = 784

a² = 384

[tex]\sqrt{a^2} =\sqrt{384}[/tex]

a = 19.59

Rounded to nearest tenth: 19.6

sydneymg

Answer:

34.4

Step-by-step explanation:

Here, we need to do 28·28 + 20·20

Then, we get 1,184 when we do that, then we square, which gives us 34.4