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Area of a Circle and a Sector

Question 4 • *CR CCSS Math 2 S2 [M2960OX]

The point (0, 5) lies on a circle that is centered at the origin. Does (–3, –4) also lie on the circle?

Answer
A
5
B
10
C
25

Explanation

The circle’s radius is the distance from the origin to (0, 5), which is 5. The distance from the origin to (–3, –4) is √((–3)² + (–4)²) = √25 = 5, so the point lies on the circle. The matching choice is A, 5.

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