Penjelasan dengan langkah-langkah:
TABUNG DIBELAH 2
r = 4 cm
t = 30 cm
p = t = 30 cm
l = 2 × r
l = 2 × 4
l = 8 cm
Luas permukaan tabung dibelah
= ½ × 2πr(r + t) + p × l
= πr(r + t) + t × 2r
= 3,14 × 4 × (4 + 30) + 30 × 8
= 12,56 × 34 + 240
= 427,04 + 240
Luas permukaan prisma
= (2 × La) + (Ka × t)
= (2 × ½πr²) + (½ × 2 × π × r × t)
= (3,14 × 4²) + (3,14 × 4 × 30)
= 50,24 + 376,8
= 427,04 cm
Jadikan jawaban terbaik ya~
Semoga membantu ^_^
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Penjelasan dengan langkah-langkah:
TABUNG DIBELAH 2
r = 4 cm
t = 30 cm
p = t = 30 cm
l = 2 × r
l = 2 × 4
l = 8 cm
Luas permukaan tabung dibelah
= ½ × 2πr(r + t) + p × l
= πr(r + t) + t × 2r
= 3,14 × 4 × (4 + 30) + 30 × 8
= 12,56 × 34 + 240
= 427,04 + 240
= 667,04 cm² ✔
Penjelasan dengan langkah-langkah:
Luas permukaan prisma
= (2 × La) + (Ka × t)
= (2 × ½πr²) + (½ × 2 × π × r × t)
= (3,14 × 4²) + (3,14 × 4 × 30)
= 50,24 + 376,8
= 427,04 cm
Jadikan jawaban terbaik ya~
Semoga membantu ^_^