mencari Rusuk
r = ³√volume
r = ³√8000
r = ³√20³
r = 20^(3/3)
r = 20¹
r = 20 cm
mencari luas permukaan
V = 6 × r²
V = 6 × 20 × 20
V = 6 × 400
V = 2.400 cm²
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a.
Banyak air = P × L
Banyak air = 80 × 60
Banyak air = 4.800 cm³
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b.
Banyak air = P × L × T
Banyak air = 80 × 60 × 50
Banyak air = 4.800 × 50
Banyak air = 240.000 cm³
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Volume = P × T
4.050 = 25 × 9
4.050 = 225
L = 4.050/225
L = 18 cm
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gambarnya ada di lampiran
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V = r × r × r
V = 4 × 4 × 4
V = 16 × 4
V = 64 cm³
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Lp = 6 × r × r
Lp = 6 × 4 × 4
Lp = 6 × 16
Lp = 96 cm²
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BANGUN RUANG BALOK
V = P × L × T
V = 23 × 12 × 11
V = 276 × 11
V = 3.036 cm³
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Lp = 2 × (p×l) + (p×t) + (l×t)
Lp = 2 × (23×12) + (23×11) + (12×11)
Lp = 2 × (276 + 253 + 132)
Lp = 2 × (529 + 132)
Lp = 2 × 661
Lp = 1.322 cm²
<(°5Яiiz°)>
