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Verified answer
Diketahui :r1 = 11 cm
r2 = 2 cm
l = 12 cm
Ditanya :
p = ?
Jawab :
l² = p² - ( r1 - r2)²
12² = p² - (11 - 2)²
144 = p² - 81
p² = 144 + 81
p² = 225
p = √225
p = 15
Jadi, jarak kedua titik pusat lingkaran adalah 15 cm