I don't exaclty know the best funtion to use for the following:

In sheet one, I have a bolt diameter in 'D9' and a grip length in 'I9'. In
'J9' should be the result 'bolt lenth' comming from nine different tables of
bolt diameters and grip length on sheet three.
Would someone be willing to look at what I have done so far and guide me to
the correct approach for getting the corresponding length for the given bolt
diameter and grip length.
Thanks in advance,
Serge