Sisi kubus = 18cm
Luas kubus = 6 x S^2
= 6 x 18^2
= 6 x 324
= 1944cm^2
Luas Balok = 2(30 . 18 + 30 . 18 + 18 . 18)
= 2 (18(2 x 30 + 18)
= 2 . 18 (60 + 18)
= 2 . 18 . 78
= 2808cm^2
Luas Total = 1944 + 2808
= 4752cm^2
^ = Pangkat
:)
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Sisi kubus = 18cm
Luas kubus = 6 x S^2
= 6 x 18^2
= 6 x 324
= 1944cm^2
Luas Balok = 2(30 . 18 + 30 . 18 + 18 . 18)
= 2 (18(2 x 30 + 18)
= 2 . 18 (60 + 18)
= 2 . 18 . 78
= 2808cm^2
Luas Total = 1944 + 2808
= 4752cm^2
^ = Pangkat
:)