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5/8 × 24km = 15 km
jalan yg belum diaspal:
24 km - 15 km = 9 km (d)
3. luas kebun yg ditanami singkong:
35/100 × 46 = 16,1 hektare
luas kebun yg ditanami pepaya :
46 hektare - 16,1 hektare = 29,9 (a)
maaf kalau salah