Jawabanmu

2014-05-31T19:28:20+07:00
P = 20
l = 15
t = 10
v = 3000 cm3
semoga bermanfaat :)
Jawaban paling cerdas!
2014-05-31T19:35:57+07:00
Pj kerangka = 4 (p + l + t)
180 = 4 (4x + 3x + 2x)
180 = 4 . 9x
180 = 36x
x =  \frac{180}{36}
x = 5 cm

p = 4x = 4 . 5 cm = 20 cm
l = 3x = 3 . 5 cm = 15 cm
t = 2x = 2 . 5 cm = 10 cm

V = p . l . t
V = 20 . 15 . 10
V = 3000 cm³
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