Question

pleaseeee answer correctlyyy !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!

Answer 1

8.246 units long

2sqrt(17) units long in simplest radical form

Explanation:

Use the Pythagorean Theorem to find the missing leg length:

a^2+b^2=c^2

4^2+b^2=sqrt(84)^2

16+b^2=84

b^2=68

b=sqrt(68)

b=2sqrt(17) <-- Simplest Radical Form

b=8.246

So the third side is approximately 8.246 units long