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V = ⅓ * L. Alas * t
s = √V * 3 / t
s = √384*3 / 8
s = √1152 / 8
s = √144
s = 12 cm
b. Luas Permukaan
tinggi bidang tegak
= √8² + 6²
= √64 + 36
= √100 = 10 cm
Luas permukaan
= L. alas + jumlah bidang tegak
= s * s + 4 * ½ * a * t
= 12 * 12 + 2 * 12 * 10
= 144 + 240
= 384 cm²
mohon maaf kalau salah