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= √12 1/4
= √49/4
= 7/2 cm
V kubus = sxsxs
= 7/2 x 7/2 x 7/2
= 343/8
= 42 7/8 cm kubik
Luas alas = 12 1/4 cm² = 12,25 cm²
mka :
Luas alas = sisi²
12,25 = sisi²
sisi = √12,25
sisi = 3,5 cm
jdi Volume = 3,5³
= 42,875 cm³