I wanted to know how many square feet of pizza you get with a 42" pie, but I'm having a bad health day and wasn't about to trust my math, so I decided to try Google Gemini (formerly Bard) to see if it could get some fairly basic math right.
Spoiler, it could not.
Gemini even gave a pop-up claiming that it searched Google to verify that the results were correct.
Elsewhere, Wolfram Alpha gave the correct answer:
9.6 versus 1,385.44
That's a pretty big difference.
Even telling Gemini that it got the wrong answer only causes it to redo the math in a different wrong way. Somehow it's getting this:
3.14159 * 21^2 = 1,385.44119. I have no idea how it inflated that number by 2%, and that was even after telling it that 10.1 square feet was a wrong answer.
I'm glad I only put this into Gemini for a laugh, because those answers are just horrible.