Originally Posted by Chairman Cheyco
Or you can download it here.
There is a problem with this spread sheet, but it is easily fixed. The math on the column for "height cm" which is #4 needs adjusting. If you click on the the box at ROW 4, COLUMN 4 the formula will appear: =(RC[-2])/((RC[-1])*(RC[-1])*3.14159),
this needs to be mulyiplied by 2, so that the formula will be: =(RC[-2])/((RC[-1])*(RC[-1])*3.14159)*2. You will need to do the same to all the boxes down column 4, but no where else.