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# I feel like this should be easy but I dont get how to set up the equation.

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I feel like this should be easy but I dont get how to set up the equation. Jul 13, 2014

#1
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Note Rose98, that J is located at (4,4). It has the same y coordinate that L does, and L is located on the y axis. So L must be located at (0,4). For a analogous reason, K's coordinates must be (4,0). So you can use the distance formula to find the distance between L and K.

However, we have a square here because JK =JL = 4 = the side length.

And the diagonal of a square is just the side length times √2.

So, 4*√2  = the diagonal length.    This is easier than using the distance formula, IMHO.

Does that help??   Jul 13, 2014

#1
+13

Note Rose98, that J is located at (4,4). It has the same y coordinate that L does, and L is located on the y axis. So L must be located at (0,4). For a analogous reason, K's coordinates must be (4,0). So you can use the distance formula to find the distance between L and K.

However, we have a square here because JK =JL = 4 = the side length.

And the diagonal of a square is just the side length times √2.

So, 4*√2  = the diagonal length.    This is easier than using the distance formula, IMHO.

Does that help??   CPhill Jul 13, 2014
#2
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Your so amazing.  Thank you!  That really helps :)

Jul 13, 2014
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