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Verified answer
Diketahui :l = 24 cm
r1 = 15 cm
r2 = 5 cm
Ditanya : p = ?
Jawab :
l² = p² - (r1 - r2)²
24² = p² - (15 - 5)²
576 = p² - 100
p² = 576 + 100
p² = 676
p = √676
p = 26 cm
Smogamembantu :))