text: import numpy as np
  import math
  
  extraNumber = 4 * math.pi * pow(10,-7)
  
  def selfInductantlengthcross():
      length = float(input('Length: '))
      numberofTurns = float(input('Number of turns: '))
      diameter = float(input('Diameter: '))
      
      radius = (diameter/100)/2
      
      length = length/100
      
      inductant = ((extraNumber * pow(numberofTurns, 2) * math.pi * pow(radius, 2))/(length)) * pow(10,3)
      
      print(inductant)
      
      
  selfInductantlengthcross()