Create a function to calculate the volume of a sphere Ensure you check for r < 0 and handle the case Use from math import pi Save this file into the folder algorithms/class2/donow with __2_donow.ipynb Commit and push to your repo Submit a PR for the Do Now



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from math import pi



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def calc_volume(r):
    if r < 0:
        return False
    return (4/3) * pi * (r ** 3)



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r = float(input("Please enter the radius: "))
calc_volume(r)









    



Please enter the radius: 3






    Out[6]:





113.09733552923254



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