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Verified answer
Kelas 10 MatematikaBab Lingkaran
(x - h)² + (y - k)² = r²
(2 - 0)² + (4 - 0)² = r²
4 + 16 = r²
r² = 20
(x - h)² + (y - k)² = r²
(x - 0)² + (y - 0)² = 20
x² + y² = 20