Math Problem Statement
Diketahui persamaan lingkaran π₯ 2 + π¦ 2 + 20π₯ β 3ππ¦ + 87 = 0 dan titik π(β10, β1) terletak pada lingkaran. Jari-jari lingkaran tersebut adalah
Solution
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Math Problem Analysis
Mathematical Concepts
Circle Equations
Substitution Method
Completing the Square
Formulas
Circle equation: (x - h)^2 + (y - k)^2 = r^2
Substitution to solve for unknowns
Completing the square to convert to standard form
Theorems
Point on a Circle Theorem: If a point lies on a circle, its coordinates satisfy the circle's equation.
Suitable Grade Level
Grade 10-11
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