My number ends in the wrong decimal

Asked Sep 05 '16 at 02:47

Active Sep 05 '16 at 03:05

Viewed 33 times

radius = float(input())
print('Enter the radius:', radius)
pi = 3.1415
volume = (4 / 3) * pi * radius * radius * radius
print('The volume is ', volume)

From this the expected value is

Enter the radius: 10.0 The volume is 4188.666666666667

However, I get the volume as 4188.666666666666

How do I fix this?

asked Sep 05 '16 at 02:47

user2917310

https://en.wikipedia.org/wiki/Floating_point#Accuracy_problems – Ozgur Vatansever Sep 05 '16 at 02:50
1

This question crops up frequently, read this post [floating point math broken](http://stackoverflow.com/q/588004/4777872) – Lost Sep 05 '16 at 02:57
What, precisely, are your requirements? – David Schwartz Sep 05 '16 at 03:59
1

Note that your value of *pi* also has a rather limited precision (even worse than float). – Rudy Velthuis Sep 05 '16 at 08:36

My number ends in the wrong decimal

0 Answers0