Diketahui:
r1 = 9 cm
r2 = 7 cm
p = 20 cm
Ditanya: l = ...?
Jawab:
l = √(p² - (r1 - r2)²)
= √(20² - (9 - 7)²)
= √(20² - 2²)
= √(400 - 4)
= √396
= √11×36
= 6√11 cm
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Diketahui:
r1 = 9 cm
r2 = 7 cm
p = 20 cm
Ditanya: l = ...?
Jawab:
l = √(p² - (r1 - r2)²)
= √(20² - (9 - 7)²)
= √(20² - 2²)
= √(400 - 4)
= √396
= √11×36
= 6√11 cm