Jawab:
Lingkaran (x - a)² + (y-b)² = r²
Luas = π r²
Penjelasan dengan langkah-langkah:
x²+ y² + 3x - 5y - 5 = 0
(x² + 3x) +( y² -5y) = 5
(x + 3/2)² + (y - 5/2)² = 5 + 3/2² + 5/2²
r² = 5 + 9/4 + 25/4
r² = 13¹/₂
Luas = π r² = π ( 13¹/₂ )
Luas = 13¹/₂ π
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Verified answer
Jawab:
Lingkaran (x - a)² + (y-b)² = r²
Luas = π r²
Penjelasan dengan langkah-langkah:
x²+ y² + 3x - 5y - 5 = 0
(x² + 3x) +( y² -5y) = 5
(x + 3/2)² + (y - 5/2)² = 5 + 3/2² + 5/2²
r² = 5 + 9/4 + 25/4
r² = 13¹/₂
Luas = π r² = π ( 13¹/₂ )
Luas = 13¹/₂ π