y = 4 − x2,    y = 0 Calculate its area

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A: NOTE: Refresh your page if you can't see any equations. . ...............(1)

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A: As per our guidline we cna solve maximum one question , you can re-post other question

Q: Use integration by parts for both.

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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A: Follow next step