Tolong kak no 4-5 bsk dikumpulkan

4. JS= JP : Skala
JS = 3 1/2 : 1/1500000
JS = 3.5 : 1500000
JS = 5250000 cm
JS = 52.5 km

5. skala = 1 : JS/JP
=1 : 100m/4cm
=1 : 100000cm/4cm
=1: 25000 cm