Jawaban:
L= a×t/2= 30cm×40cm/2=600×2=1200
L= p×l=30×20=600
1200+600=1800
K=50+30+20+30+20+30+50+30=260
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Jawaban:
L= a×t/2= 30cm×40cm/2=600×2=1200
L= p×l=30×20=600
1200+600=1800
K=50+30+20+30+20+30+50+30=260