Answer :
A program that takes the radius of a sphere (a floating-point number) as input and then outputs the parameter of the spheres is given below:
The Code
from math import pi
r = radius
radius = int(input("Radius = "))
print (float("Diameter : " + int(input(float(2 * radius))))
radius = int(input("Radius = "))
diameter = <...calculate diameter...>
print('Diameter =', diameter)
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