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G. singgung perseskutuan dalam (d) = 20 cm
R = 9 cm
r = 6 cm
Ditanya : Jarak kedua pusat lingkaran (p)?
Jawab :
→ d² = p² - (R + r)²
→ 20² = p² - (9 + 6)²
→ 20² = p² - (15)²
→ 400 = p² - 225
→ 400 + 225 = p²
→ 625 = p²
→ p = √625
→ p = 25 cm [Jawaban]
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