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

Rose98 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

#1**+13 **

Best Answer

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