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luas permukaan kubus =
s × s × 6
= 27 × 27 × 6
= 4.374
luas permukaam tabung =
2 × 3,14 × 3,5 × ( 3,5 + 11)
=318.71
selisih =
4.374 - 318,71
=4.055,29
maaf kalau salah
Jawab:
Lp tabung = 2 phr ( r + t ) / 14,5 ( r + t )
2 × 3,14 × 3,5 ( 3,5 + 11 )
= 21,98 ( 14,4 )
= 318,71 cm2
Lp kubus = 6s2
6 × 27^2
= 6 × 729
= 4374 cm2
Maka selisih
Lp kubus - Lp tabung
= 4374 - 318,71
= 4.055
Yang ( c ) jawabannya