d² = p² - (R + r)²
(R + r)² = p² - d²
(R + r) = √p² - d²
(6 + r) = √15² - 12²
= √225 - 144
= √81
(6 + r) = 9
r = 9 - 6
r = 3 cm
semoga membantu :)
Jawaban:
r = 3 cm, semoga membantu :)
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d² = p² - (R + r)²
(R + r)² = p² - d²
(R + r) = √p² - d²
(6 + r) = √15² - 12²
= √225 - 144
= √81
(6 + r) = 9
r = 9 - 6
r = 3 cm
semoga membantu :)
Jawaban:
r = 3 cm, semoga membantu :)