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k = 2(p+l)
=2(10+12)
=2(22)
=44 cm
JS = 14km = 1400000cm
Skala = 7 : 1400000 = 1 : 200000
15) diperbesar 2x jadi dikalikan 2
5x2 = 10cm
6x8 = 48cm
jadi Kelilingnya = 2(10+48) = 116cm
16) 200000+50000 = 250000
390000-250000 = 140000
jadi pedagangnya Untung 140000