tolong jawab soal ini

1) V = π × r² × t
= 3,14 × 18 × 18 × 40
= 40.694,4 cm³

2) V = π × r² × t
= 22/7 × 21 × 21 × 45
= 62.370 cm³

3) V = π × r² × t
= 3,14 × 16 × 16 × 38
= 30.545,92 cm³

4) V = π × r² × t
= 3,14 × 18 × 18 × 88
= 89.527,68 cm³

5) V = π × r² × t
= 22/7 × 15 × 15 × 35
= 24.750 cm³