1. ## triangle

stuck on part question10.i im trying to use pythagorous. 4^2 = square root(2^2 +h^2) when i solve this i get root 252 the right answer is though 2root3. dont know where i am going wrong

2. ## Re: triangle

Pythagoras would yield 4^2 = 2^2 + h^2.

Can you take it from here?

3. ## Re: triangle

$h^2+2^2=4^2\implies h^2=4^2-2^2\implies h= \sqrt{16-4}=\sqrt{12}=2\sqrt{3}$

4. ## Re: triangle

Thanks was using wrong forumula