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Verified answer
Jawabannya:Mapel : Matematika
Bab : Lingkaran
Sub Bab : Garis Singgung Lingkaran
Pembahasan:
p² = d² + (R + r)²
p² = 40² + (20 + 10)²
p² = 1.600 + (30)²
p² = 1.600 + 900
p² = 2.500
p = √2.500
p = 50 cm → Jwbnya
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