tolong jawab no 4,9,10 dan bag 3 no 2,4,5 terimakasih

4. L = π.r² = ²²/7. 14 . 14 = 44 . 14 = 616 cm²

9. L = π.r².t = ²²/7 . 9 . 9 . 14 = 44 . 81 = 3564 cm³

10. L = ¼.π.d².t = ⅛ . 3,14 . 5 . 5 . 10 = ½ . 3,14 . 125 = 196.25

Rom 3 :
2. L lingkaran + L persegi panjang
= πr² + p.l
= 3,14 . 30 . 30 + 120 . 60
= 2826 + 7200
= 10026 m²

4. L = πr²
2464 = π . r²
2464 = 3,14 . r²
784,7 = r²
28,01 = r

5. π.r².t = ²²/7 . 7 . 7 . 5 = 770m³