Cari lebar persegi panjang:
Keliling : 2 - panjang
= 50 : 2 - 12
= 25 - 12
= 13 cm
Cari luas persegi panjang:
panjang × lebar
= 12 × 13
= 156 cm²
Jawaban:
156 cm²
Penjelasan dengan langkah-langkah:
k = 2 (p+ l)
50 cm = 2 ( 12 cm + l )
50 cm = 24 cm + 2l
24 cm + 2l = 50 cm
2l = 50 cm - 24 cm
l = 26 cm ÷ 2
l = 13 cm
•Luas Persegi Panjang
p × l
= 12 cm × 13 cm
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Jawaban:
Cari lebar persegi panjang:
Keliling : 2 - panjang
= 50 : 2 - 12
= 25 - 12
= 13 cm
Cari luas persegi panjang:
panjang × lebar
= 12 × 13
= 156 cm²
Jawaban:
156 cm²
Penjelasan dengan langkah-langkah:
k = 2 (p+ l)
50 cm = 2 ( 12 cm + l )
50 cm = 24 cm + 2l
24 cm + 2l = 50 cm
2l = 50 cm - 24 cm
l = 26 cm ÷ 2
l = 13 cm
•Luas Persegi Panjang
p × l
= 12 cm × 13 cm
= 156 cm²