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?
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).