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Whats the answer i have no idea and I'm really having a hard time

Whats the answer i have no idea and I'm really having a hard time-example-1
User Mikus
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1 Answer

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remember order of operations exponents first r^2 since r=7 it is 7^2 which equals 49 then you multiply it by 3.14 which would give you 153.86
User Hax
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