pjg rusuk kubus = p x 12
p = 240/12
p = 20
vol. Kubus = p^3
maka vol kubus = 20 x 20 x 20 = 8000 dm^3
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pjg rusuk kubus = p x 12
p = 240/12
p = 20
vol. Kubus = p^3
maka vol kubus = 20 x 20 x 20 = 8000 dm^3