Jawabanmu

Jawaban paling cerdas!
2014-09-06T19:15:20+07:00
1/2 x (a+b) x t = 1/2 x (18 cm + 12 cm ) x 5 cm = 1/2 x 30 cm x 5 cm = 15 cm x 5 cm = 75 cm^
 
skala x jarak gambar = 300 m x 0,0075 m = 22,5 m