Zybooks - python sphere volume challenge

Question

Scenario: Given sphere_radius and pi, compute the volume of a sphere and assign to sphere_volume. Volume of sphere = (4.0 / 3.0) π r^3

Sample output with input: 1.0 Sphere volume: 4.19

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pi = 3.14159
sphere_volume = 0.0

sphere_radius = float(input())

''' Your solution goes here '''

sphere_volume = (4.0/3.0) * pi * sphere_radius

print('Sphere volume: {:.2f}'.format(sphere_volume))

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Test Results:

(Correct) Testing volume with input: 1.0 Your output Sphere volume: 4.19

(Incorrect) Testing volume with input: 5.5 Output differs. See highlights below. Your output Sphere volume: 23.04 Expected output Sphere volume: 696.91

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I'm getting the 1st half of the tests complete but when it runs the code again, it fails the 2nd portion.

Answer 1

You must cube radius value in the formula:

pi = 3.14159 
sphere_volume = 0.0

sphere_radius = float(input())
sphere_volume = (4.0/3.0)*pi*(sphere_radius)**3

print('Sphere volume: {:.2f}'.format(sphere_volume))

Output:

1
Sphere volume: 4.19