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