jawab pakai cara nomor 18-25

18. Sisi kain = √24.649
= 157 cm
19. aisyah = 1 jam 32 menit = 92 menit
putri = 2 jam 18 menit = 138 menit
selisih = 138 menit - 92 menit
=0 jam 46 menit
20. jarak rumah pak cakra - adi = 1,5 hm × 100
= 150 m
jarak rumah pak candra-bayu = 3.500 m
jarak rumah adi-bayu = (3.500+150)÷10
= 365 dam
21. 1 ton = 1000 kg
2,5 kuintal = 250 kg
total = 1255 kg
22. 0,5 ha = 0,5 × 10000 = 5000
0,025 ha = 0,025 × 10000= 250
LT =5000 m² -(370m²+250m²+250m²)
=5000m²-870m²
=4.130 m²
23. 0,187 m³= 0,187×1000
= 187 liter
=187 liter + 12 liter - 3 liter
= 199 liter
24. lama perjalanan = 7 jam 45 menit - 15 menit
= 7½ jam
jarak = 525 km
kecepatan= 525 km ÷7½ jam
= 70 km/jam
25. B. persegi