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The area under y = √(a² - x²) for 0 ≤ x ≤ a is
Aπa²/2 sq units
Bπa²/3 sq units
Cπa² sq units
Dπa²/4 sq units
Answer & Solution
Correct answer: D. πa²/4 sq units
The region is a quarter of the circle of radius a, so it has area πa²/4.
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