pakai caranya ya bro biar ane kagak bingung hehehe

Diketahui
p : l = 8 : 5
p = 8/5 l
K = 52 cm
K = 2(p + l)
52 = 2(8/5 l + l)
52/2 = (8/5 l + 5/5 l)
26 = (13/5 l)
l = (26 × 5) / 13
l = 10 cm
Maka p = 8/5 (10) = 16 cm
L = p × l = 10 × 16 = 160 cm²

2) JS = JP × S
Jarak sebenarnya = jarak pada peta × skala
JS = 2,5 cm × 500.000
JS = 1.250.000 cm
JS = 12,5 KM