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Verified answer
Jawab :R - r = 10 - r
r = √17² - 15² - 10
= √289 - 225 - 10
= √64 - 10
= 8 - 10
= 2 cm
Verified answer
Kelas 8 MatematikaBab Lingkaran
R - r = √(panjang garis sentral² - panjang garis singgung²)
10 - r = √(17² - 15²)
-r = -10 + √(289 - 225)
r = 10 - √64
r = 10 - 8
r = 2 cm