15. What is the area of the circle whose equation is (X - 9)2 + (y - 3)2 = 64? O 167
O 647
O 8
2 40

64π

General Formulas and Concepts:

Geometry

Area of a Circle Formula: A = πr²

Pre-Calculus

Center-Radius Form: (x - h)² + (y - k)² = r²

Step-by-step explanation:

Step 1: Define

Identify

(x - 9)² + (y - 3)² = 64

↓ Compare to Center-Radius Form

Center (9, 3)

Radius² = 64

Step 2: Find Area

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answer: d.) the total number of protons and neutrons is 15

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