Penjelasan dengan langkah-langkah:
3.
sisi = 8cm
Luas Permukaan kubus = 6 × s²
= 6 × 8²
= 6 × 64
= 384cm²
4.
p = 10cm
l = 7cm
t = 5cm
Luas permukaan balok = 2(p × l) + 2(p × t) + 2(l × t)
= 2(10cm × 7cm) + 2(10cn × 5cm) + 2(7cm × 5cm)
= 140cm² + 100cm² + 70cm²
= 310cm²
5.
a = 10cm
t = 12cm
tP = 22cm
Volume Priama = Luas Alas × Tinggi
= ½ × 10cm × 12cm × 22cm
= 60cm² × 22cm = 1320cm³
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Penjelasan dengan langkah-langkah:
3.
sisi = 8cm
Luas Permukaan kubus = 6 × s²
= 6 × 8²
= 6 × 64
= 384cm²
4.
p = 10cm
l = 7cm
t = 5cm
Luas permukaan balok = 2(p × l) + 2(p × t) + 2(l × t)
= 2(10cm × 7cm) + 2(10cn × 5cm) + 2(7cm × 5cm)
= 140cm² + 100cm² + 70cm²
= 310cm²
5.
a = 10cm
t = 12cm
tP = 22cm
Volume Priama = Luas Alas × Tinggi
= ½ × 10cm × 12cm × 22cm
= 60cm² × 22cm = 1320cm³