how to find eucledian distance b/w nodes present inside a particular cell of a grid?here under the following code i want to find eucledian distance present inside the cell(3,1).here all cells are seperated from other. plz help with code

how to find eucledian distance b/w nodes present inside a particular cell of a particular grid?here under the following code i want to find eucledian distance present inside the cell(3,1).here all cells are seperated from other. plz help with code as soon as possible.............here i have to create clusters on the basis of eucledian distance ie. on the basis of minimum distance b/w nodes.