Jawaban:
5 cm
Penjelasan dengan langkah-langkah:
R + r = √(jarak pusat² - garis singgung²)
11 + r = √(20² - 12²)
r = -11 + √(400 - 144)
r = -11 + √(256)
r = -11 + 16
r = 5 cm
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Jawaban:
5 cm
Penjelasan dengan langkah-langkah:
R + r = √(jarak pusat² - garis singgung²)
11 + r = √(20² - 12²)
r = -11 + √(400 - 144)
r = -11 + √(256)
r = -11 + 16
r = 5 cm