While messing around with making a little rocket launch simulator, I seem to have hit a slight wall with finding the relevant information in order to calculate the width and height of the rocket for drag purposes.
I have found a lot about calculating a rocket's width to a degree, but nothing really that I have found goes in to much detail about its width and height together throughout launch. Take Falcon 9
With a launch height of
And a width of
The fairing is wider than the stages
While there are various websites out there that try to explain the solution, I am struggling to unable to understand their solutions. With Falcon's measurements, how am I able to calculate them to its surface area?