C because PEMDAS
(Please excuse my dear aunt sally)
Answer A) is the correct option because the rest are wrong. :)
16.81665382639196787 x 4.81665382639196787
80.99999999999999982646270300946414412
All you have to do is figure out the rest of the decimal places. I couldn't go any farther. Good luck!
Step-by-step explanation:
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pasensya na god bless!!!!