No, you're wrong, you can see my solution works with a different formula.

got the same error in C++. description could be updated to w / h / h since that is the only formula that works
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height*height does calculate the square of height in JS (assuming that height is a number), so the problem must be elsewhere.

Please don't raise issues so lightly, if you don't know, it's not an issue. We don't know what you are refering to, which language you are using, etc. See there: https://docs.codewars.com/training/troubleshooting