how to use math.pi in java

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长情又很酷
长情又很酷 2021-02-03 19:58

I am having problems converting this formula V = 4/3 π r^3. I used Math.PI and Math.pow, but I get this error:

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  •  旧时难觅i
    2021-02-03 20:29

    You're missing the multiplication operator. Also, you want to do 4/3 in floating point, not integer math.

    volume = (4.0 / 3) * Math.PI * Math.pow(radius, 3);
               ^^      ^
    

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