Jawab: 5 cm
Penjelasan dengan langkah-langkah:
Keliling Persegi Panjang = 2 (P + L)
42 cm = 2 ( 16 cm + L)
42 cm =32 cm + 2L
42 cm - 32 cm = 2L
10 cm = 2L
L = 10/2
L = 5 cm.
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Jawab: 5 cm
Penjelasan dengan langkah-langkah:
Keliling Persegi Panjang = 2 (P + L)
42 cm = 2 ( 16 cm + L)
42 cm =32 cm + 2L
42 cm - 32 cm = 2L
10 cm = 2L
L = 10/2
L = 5 cm.