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Here's the problem:

 

I already solved the answer for 15.a) which is \(2{\sqrt{38}}\) m, what I need help is with part b.

 

Here's my work:

 

but the answer is \({8\sqrt{19}}\) m.

 

What did I do wrong?

 Jul 18, 2018
 #1
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You haven't done anything wrong! You have just calculated ONE SIDE of the square!!.

So, all you have to do is multiply: 4 x 2sqrt(19) =8 sqrt(19).

 Jul 19, 2018

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