volume kerucut 20,790 cm3, jari jari kerucut 21 cm, tinggi kerucut
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Jawaban:
Cara √
[tex]t = (v \times 3) \div (\pi \times r ^{2} ) \\ = (20.790 \times 3) \div ( \frac{22}{7} \times 21 \times 21) \\ = 62.37 \div 1386 \\ = 0.045 \: cm[/tex]
- Kerucut.
V = ⅓ × π × r × r × t.
- Keterangan.
π = phi ( 22/7 atau 314/100).
r = jari - jari .
t = tinggi.
- Diketahui.
π = 22/7
r = 21 cm.
t = ? cm.
V = 20.790 cm³.
- Jawaban
V = ⅓ × π × r × r × t
20.790 = ⅓ × 22/7 × 21 × 21 × t
20.790 ÷ 22 ÷ 21 ÷ 21 × 3 × 7 = t
t = 45 cm.
Done!
Amswer by : Violet.
