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Pnjng rusuk K1 = 8 cm
Panjng rusuk K2 = 12 cm
maka :
LP K1 : LP K2
6 x 8² : 6 x 12²
384 : 864 ----------dibagi 96
4 : 9
kubus 2 = 12.12 => 144 cm2
k.1 : k.2 = 64 : 144
= 8 : 18 = 4 : 9
*THX
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