Python 3.4.2 (default, Jun 19 2015, 11:34:49)
[GCC 4.9.1] on linux
Type "copyright", "credits" or "license()" for more information.
>>> import math
>>> math.ceil(math.sqrt(9))
3
>>> math.ceil(math.sqrt(9.5))
4
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>>>
37.69911184307752
113.09733552923255
12
31.41592653589793
78.53981633974483
10
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>>>
area and perimeter
30
22
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>>>
113.09733552923255
78.53981633974483
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>>>
>>> =====