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5 votes
I don't get how to do it i have tried but I can't I think that it might be 20 i think

I don't get how to do it i have tried but I can't I think that it might be 20 i think-example-1

1 Answer

4 votes
Close! You forgot to square the 20!
I don't get how to do it i have tried but I can't I think that it might be 20 i think-example-1
User Masseyb
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