Jawabanmu

Jawaban paling cerdas!
2014-06-05T23:40:40+07:00
V = 1/3.La.t                         ⇒p = 4(4) = 16 cm
1280 = 1/3.4x.3x.5x             ⇒ l = 3(4) = 12 cm
1280.3 = 60x³                      ⇒ t = 5(4) = 20 cm
3840 = 60x³
x³ = 64
x = 4 c

panjang diagonal = √16²+12²
                          =  20
1 5 1