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pnjang tali = 1,8 m = 180 cm
mk :
a. Pnjng rusuk = 180 / jmlh rusuk
= 180 / 12 = 15 cm
b. Lp = 6 x sisi²
= 6 x 15²
= 1.350 cm²
jadi luas karton = 1.350 cm²
c. V = sisi³
= 15³
= 3.375 cm³
b. luas = 6 x 15 x 15 = 1350cmkuadrat
c. vol = 15 x 15 x 15 = 3375cmkubik