calculating the area of a circle with bc

[Tony Arnold]

Loic,

Loïc Grenié wrote:

>   (scale=2 or 4 might be sufficient for your purpose). As said elsewhere,
>   you can eliminate the "a(1)"
> 
> echo "scale=4;$2/$1^2" | bc -l

And to be pedantic you don't need the -l option for the above:

echo "scale=4;$2/$1^2" | bc

Regards,
Tony.
-- 
Tony Arnold,                        Tel: +44 (0) 161 275 6093
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