[Tutor] calculate area of a circle

[vishwajeet singh]

you need import math

On Wed, Apr 15, 2009 at 2:22 PM, mbikinyi brat <mbikinyi_brat at yahoo.com>wrote:

> Hi All,
> This is a code I have written to calculate the area of a circle.
> *def area(radius):
>  temp=math.pi*radius**2
>  return temp*
> **
> *I* now call it by entering *area(12)* at the prompt in IDLE. This is the
> error message I get. Can someone help please?
> *Traceback (most recent call last):
>   File "<pyshell#22>", line 1, in <module>
>     area(10)
>   File "<pyshell#21>", line 2, in area
>     temp=math.pi*radius**2
> NameError: global name 'math' is not defined*
> **
> Regards,
> Henry
>
>
>
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>


-- 
Cheers,
Vishwajeet
http://www.singhvishwajeet.com
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