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
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Pythagoras would yield 4^2 = 2^2 + h^2. Can you take it from here?
$h^2+2^2=4^2\implies h^2=4^2-2^2\implies h= \sqrt{16-4}=\sqrt{12}=2\sqrt{3}$
Thanks was using wrong forumula