Question

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Answer 1

Jawaban:

Penyelesaian :

• Jari - jari = 10 cm
• Tinggi = 20 cm
• π = 3,14

Luas permukaan tabung

[tex] \sf L = 2 \times \pi \times r(r + t)[/tex]

[tex] \: \: \: \: \sf = 2 \times 3,14 \times 10(10 + 20)[/tex]

[tex] \: \: \: \: \sf = 2 \times 31,4(10 + 20)[/tex]

[tex] \: \: \: \: \sf = 62,8(30)[/tex]

[tex] \: \: \: \: \sf = 1.884 \: {cm}^{2} [/tex]

'비상'

Answer 2

2πr=2×3,14×10(10+20) =1.884cm²

penjelasan:

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