tolong ya nomor 1 sampai no 5

1) L = ½ × (a + b) × t
1200 m² = ½ × 150 × t
1200 = 75 × t
t = 16 m

2) L = ½ × (a + b) × t
= ½ × (12 + 6) × 5
= ½ × 18 × 5
= 45 m²
uang yg harus dikeluarkan
= 45 m² × 40.000
= 1.800.000

3) L = ½ × (a + b) × t
= ½ × (2,5 + 2) × 1,6
= ½ × 4,5 × 1,6
= 3,6 m²
= 3,6 × 10.000
= 3600 cm²
banyak kaleng yg dibutuhkan
= 3600 cm² ÷ 4500 cm²
= 0,8
= 8/10
= 4/5 kaleng

4) L = ½ × d1 × d2
= ½ × 34 × 25
= 425 m²
hasil panen
= 425 × 18
= 7650 kg

5) L = ½ × d1 × d2
= ½ × 64 × 56
= 1792 cm²