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how can you find the perimeter of a triangle whose side lengths are 9cm, 7radical 2cm, and radical 8?
 Sep 30, 2013

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 #1
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I don't know. But sorry
 Sep 30, 2013
 #2
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[size=150]Thanks for the help!!!! [/size]
 Sep 30, 2013
 #3
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Do you mean 9. 7root2, and root8?

You have to simplify root 8
root 8 = root (4*2) = root4 * root2 = 2root2

7root2+ 2root2 + 9 = 9root2 + 9 cm or 9(root2+1) cm
 Oct 1, 2013

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