Jawapan

2016-07-15T13:34:34+08:00
V kuboid = plt = 3 × 5 × 6 = 90 cm³ ->> V setiap sfera = 90 cm³ : 2 = 45 cm³ ->> V sfera = 45 -> 4/3πr³ = 45 -> πr³ = 45 : 4/3 -> πr³ = 45 × 3/4 -> r³ = 33,75 : 3,142 -> r = ∛10,742 -> r = 2,21 cm