Jawaban:
Lp=2×(p×l)+(p×t)+(l×t)
=2×(15×6)+(15×5)+(6×5)
=2×(90+75+30)
=2×195
=390 cm²
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Jawaban:
Lp=2×(p×l)+(p×t)+(l×t)
=2×(15×6)+(15×5)+(6×5)
=2×(90+75+30)
=2×195
=390 cm²