Idive to a depth of 11 metres/39 feet and stay for 46 minutes. what would my pressure group (pg) be at the end of the dive?

Ans. The pressure group (pg) at the end of the dive will be K.

Since, I dive to a depth of 11 metres/39 feet and stays for 46 minutes, then the pressure group (pg) at the end of the dive can be find out using Recreational-Dive Planner which is designed specifically for recreational dives i.e. on air only and no decompression dives. With the help of Table 1 of Recreational –dive Planner, the pressure group (pg) can be find out which is K group for 11 metres/39 feet and time 46 minutes.

Distance^2= yellow line ^2 (see picture) = 30^2 + 49^2so distance = squareroot of (300^2 +49^2)i dont know if this is how to solve it, but i cnt think of another way