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l sebenarnya = skala : jrk pd dnh = 600 x 3 = 1800
kell sbnrnya = 2(p+l) = 2 (2700+1800) = 9000 cm = 90 m (D)
12. kpk dari 4 dan 10
4 = 2^2
10 = 2 x 5
kpk = 2^2 x 5 = 20
10 oktober 2013 + 20 hari = 30 oktober (b)
14. L = 1/2 x a x t = 1/2 x 10 x 16 = 80 cm^2 (a)
15. a
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