Jawabanmu

2014-05-31T20:35:20+07:00
D² = p² - (r1 + r2)²
24² = 26² - (6 + r2)²
576 = 676 - (6 + r2)²
(6 + r2)² = 100
(6 + r2) = 10
r2 = 4
jawaban: 4 cm