Answer:
1. 197.82 cm³
2. 37.68 cm³
Step-by-step explanation:
1.
[tex]\pi \: r {}^{2} h[/tex]
= 3.14 × ( 3 × 3 ) × 7
= 3.14 × 9 cm² × 7
= 197.82 cm³
2.
V= ⅓ Bh
= ⅓
[tex] = \frac{1}{3} \pi \: r {}^{2} h[/tex]
= ⅓ ( 3.14 × 3²) × 4
= ⅓ ( 3.14 × 9) × 4
= ⅓ ( 28.26 ) × 4
= ⅓ × 113.04
= 37.68cm³
