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No 1
dik : jrk sbnrny = 150 km
jrk pd peta = 5cm
dit: skala
150×100.000 =15.000.000 : 5 = 3000.000
Jadi skala = 1:3000000

No 2
dik : skala = 1:2500000
jrk pd peta = 15 cm
dit= jrk sbnrny
2500000 : 100000 = 25
25×15 = 375 km

No 3
dik : jrk pd peta= 6.8
skala = 1:3.500.000
dit= jrk sbnrny
3500000 : 100000 = 35
35×6.8 = 238 km

No 4
dik : jrk sbnrny =360km
skala = 1:2400000
dit = jrk pd peta

360×100000 = 36000000
36000000 : 2400000 = 15 cm

No 5
dik : lebar sbnrny 400m
skala = 1:2500
dit = lebar pd denah
400 x 100 = 40000
40000 : 2500 = 16 cm