Yes, agree exactly.
I get the following
P4 crossover from base 38.49859273
P3 crossover from base 44.87892315
do you agree?
Also please find attached "horror" spreadsheet which I have been using!
The worksheet "Input and Answer Display Q2" is used for entering and display of answers. Worksheet "Calculations Query2" is used for the working steps. I am struggling with "Calculations Query1" to determine how to get length for P3. I am sure the diagram will cause amusement!