ka tolong jawab y kakak maaf kalau terlalu banyak.. terima kasih

3. Luas = alas × tinggi / 2
= 10 × 7 / 2 = 70 / 2 = 35 cm²
4. Luas = panjang × lebar
→ Lebar = luas / panjang
= 48 / 8 = 6 cm
5. Luas = jumlah sisi sejajar × tinggi / 2
= (12+7) × 5 / 2 = 19 × 5 / 2 = 95 / 2 = 47,5 cm²
6. Volume = alas × tinggi
→ Tinggi = Volume / alas
= 70 / 14 = 5 cm
7. V = alas × tinggi
→ πr² × t
= 3,14 × 9 × 9 × 14 = 3560,76
8. V = πr²
→ r = √ V/π
= √5.024 / 3,14 = √1.600 = 40 cm
9. V = alas × tinggi
= (6×4 / 2) × 8 = (24 / 2) × 8 = 12 × 8 = 96 cm²
10. *ngk tahu gambarnya kyk gmn*
11. Keliling O → πd
12. Luas → πr²
= 22/7 × 28 × 28 = 2.464 m²
Keliling → πd
= 22/7 × 56 = 176 m