Jawaban
d² = P²-(R1+R2)²
12² = 15²-(7+R2)²
144 = 225 - (7+R2)²
(7+R2)² = 225-144
7 + R2 = akar 81
7 + R2 = 9
R2 = 9-7 = 2
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Jawaban
d² = P²-(R1+R2)²
12² = 15²-(7+R2)²
144 = 225 - (7+R2)²
(7+R2)² = 225-144
7 + R2 = akar 81
7 + R2 = 9
R2 = 9-7 = 2