Question

Q.
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3. Volume sebuah tabung mempunyai jari-jari alas 50 cm dan tinggi 15 cm. Luas Permukaan tabung adalah ..
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Answer 1

• Volume

= πr²t

= 3,14 × 50² × 15

= 3,14 × 2.500 cm² × 15 cm

= 117.750 cm³

• Luas permukaan

= 2πr(r + t)

= 2 × 3,14 × 50 × (50 + 15)

= 314 × 65

= 20.410 cm²

Answer 2

SOAL 1

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V Tabung = π × r² × t

V Tabung = 3,14 × 50² × 15

V Tabung = 3,14 × 2.500 × 15

V Tabung = 3,14 × 37.500

V Tabung = 117.750 cm³

___________________________________________ Lp Tabung = 2 × π × r × (r + t)

Lp Tabung = 2 × 3,14 × 50 × (50 + 15)

Lp Tabung = 2 × 3,14 × 50 × 65

Lp Tabung = 2 × 3,14 × 3.250

Lp Tabung = 2 × 10.205

Lp Tabung = 20.410 cm²

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