Jawabanmu

Jawaban paling cerdas!
2014-05-12T21:11:28+07:00
Diket = p = 200.000 Kpa = 2.10⁵.10³.pa = 2.10⁸ pa
            F = 1,57.10⁴ N

Ditanya  =R......?

jawab = P = F/A
           A = F/P = 1,57/2.10⁸ = 0,8.10⁻⁴ = 8.10⁵ m²
           A = phi  r ² = 8.10⁻5
               = 3,14 r ² = 8.10⁻⁵
               = r ² = 8.10⁻⁵/3,14 = 3.10⁻⁵
             r = v (3.10⁻⁵) = 0.005 m = 0.5 cm = 5 mm
2 5 2