Penjelasan dengan langkah-langkah:
Pertama tama, cari rusuk nya terlebih dahulu.
s√3 = Diagonal Ruang
s√3 = √54
s = √54/√3
s = √18
s = 3√2 cm
Cari diagonal sisi.
d = s√2
d = 3√2.√2
d = 3.2
d = 6 cm
Luas ACG.
L = 1/2 . AC . CG
L = 1/2 . 6 . 3√2
L = 18√2/2
L = 9√2 cm² (A)
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Penjelasan dengan langkah-langkah:
Pertama tama, cari rusuk nya terlebih dahulu.
s√3 = Diagonal Ruang
s√3 = √54
s = √54/√3
s = √18
s = 3√2 cm
Cari diagonal sisi.
d = s√2
d = 3√2.√2
d = 3.2
d = 6 cm
Luas ACG.
L = 1/2 . AC . CG
L = 1/2 . 6 . 3√2
L = 18√2/2
L = 9√2 cm² (A)