V = 729 cm³
Lp = 486 cm²
Luas = s²
81 = s²
s = √81
s = 9 cm
V kubus = s³
V kubus = 9³
V kubus = 9 × 9 × 9
V kubus = 729 cm³
Lp kubus = 6 × s²
Lp kubus = 6 × 9²
Lp kubus = 6 × (9 × 9)
Lp kubus = 6 × 81
Lp kubus = 486 cm²
Mapel : Matématika
Kelas : 4
Bab : Bangun Ruang
Kata kunci : Menentukan luas permukaan dan volume bangun ruang kubus.
Luas alas = Sisi × Sisi
81 cm² = Sisi²
Sisi = √81 cm²
Sisi = 9 cm
= 6 × S × S
= 6 × 9 cm × 9 cm
= 486 cm²
= Sisi × Sisi × Sisi
= 9 cm × 9 cm × 9 cm
= 729 cm³
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Jawaban
V = 729 cm³
Lp = 486 cm²
Penjelasan
Cari dulu sisinya
Luas = s²
81 = s²
s = √81
s = 9 cm
Mencari Volume kubus
V kubus = s³
V kubus = 9³
V kubus = 9 × 9 × 9
V kubus = 729 cm³
Mencari Luas Permukaan Kubus
Lp kubus = 6 × s²
Lp kubus = 6 × 9²
Lp kubus = 6 × (9 × 9)
Lp kubus = 6 × 81
Lp kubus = 486 cm²
DETAIL JAWABAN
Mapel : Matématika
Kelas : 4
Bab : Bangun Ruang
Kata kunci : Menentukan luas permukaan dan volume bangun ruang kubus.
⚡TABRANI IM⚡
SISI
Luas alas = Sisi × Sisi
81 cm² = Sisi²
Sisi = √81 cm²
Sisi = 9 cm
Luas permukaan
= 6 × S × S
= 6 × 9 cm × 9 cm
= 486 cm²
VOLUME
= Sisi × Sisi × Sisi
= 9 cm × 9 cm × 9 cm
= 729 cm³
⭐DETAIL JAWABAN⭐