hitung volume bangun ruang gabungan berikut tkerucut:40cm,p:30cm,r:21cm
Materi : Bangun Ruang dan Volume
V( Tabung + Kerucut )
V = π × r² × t + ⅓ × π × r² × t
V = 3,14 × 6 × 6 × 30 + ⅓ × 3,14 × 6 × 6 × 10
V = 3,14 × 36 × 30 + ⅓ × 3,14 × 36 × 10
V = 3,14 × 1.080 cm³ + 3,14 × 120 cm³
V = 3,14 × 1.200 cm³
{ V = 3.768 cm³ }
Semoga bisa membantu
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Penyelesaian:
t kerucut=40-30=10cm
r=6cm
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V=⅓×La×t
V=⅓×Πr²×t
V=⅓×3,14×6×6×10
V=31,4×12
V=376,8cm³
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V=Πr²×t
V=3,14×6×6×30
V=3,14×36×30
V=113,04×30
V=3.391,2
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V=376,8+3.391,2
V=3.768cm³
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