I have the following data in LibreOffice:

As you can see there are 3 sets of measurement. I want to automatically feel in the D column with the following formula automatically. For example `D2`

will be

```
D2=sqrt((b2^2)+(c2^2))
```

and the same for D3, should be calculated by values of B3 and C3.

Whatever I try, it just sums the formula for the whole B and C column and puts it in a single cell (in this case D2) for me.

So how can I apply this formula to each cell of `D`

column using the respective row number values of `B`

and `C`

columns?