11. 12. 13. tolong dijawab
Matematika
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Pertanyaan
11.
12.
13.
tolong dijawab
12.
13.
tolong dijawab
1 Jawaban
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1. Jawaban sasa329
11. L=1/2×30×12
=180cm2
12. L=a×t
180 cm2=12 cm×t
t=180 cm2 ÷ 12 cm
=15 cm
13. K = 2×(p+l)
80 cm= 2×(p+12 cm)
80 cm= 2p+24cm
2p= 80cm - 24 cm
2p= 56 cm
p= 28 cm
Maaf kalau salah