Question

Find the length of the missing side. Give your answer in the simplest radical form.

Answer 1

Answer:

x = $2\sqrt{5}$

Step-by-step explanation:

Use Pythagorean theorem,

Hypotenuse² = base² + altitude²

x² = (√8)² + 4²

  =  8 + 16

  = 20

x = √20 = $\sqrt{2*2*5} = 2\sqrt{5}$

x = $2\sqrt{5}$