Question

sebuah bola berjari-jari 14 cm Tentukan volume dan luas permukaan​

Answer 1

Penjelasan dengan langkah-langkah:

Volume

v = 4/3 × π × r³

v = 4/3 × ²²/7 × 14 cm³

v = 4/3 × ²²/7 × 14 cm × 14 cm × 14 cm

v = 4/3 × 22 × 2 cm × 14 cm × 14 cm

v = 4/3 × 44 cm × 14 cm × 14 cm

v = 4/3 × 616 cm × 14 cm

v = 4/3 × 8.624 cm

v = 11.498,67 cm³

Luas Permukaan

lp = 4 × π × r²

lp = 4 × ²²/7 × 14 cm²

lp = 4 × ²²/7 × 14 cm × 14 cm

lp = 4 × 22 × 2 cm × 14 cm

lp = 4 × 44 cm × 14 cm

lp = 4 × 616 cm

lp = 2.464 cm²

Answer 2

• Volume bola

Jari jari = 14 cm

V = 4/3πr³

V = 4/3 × 22/7 × 14 × 14 × 14

V = 4/3 × 22 × 2 × 14 × 14

V = 4/3 × 8.624

V = 11.498,67 cm

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• Luas permukaan

Jari jari = 14 cm

Lp = 4πr^2

Lp = 4 × 22/7 × 14 × 14

Lp = 4 × 22/7 × 196

Lp = 2.464 cm