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Bab : Bangun Datar
Diketahui :
- Panjang Persegi Panjang (p) = 5x cm
- Lebar Persegi Panjang (l) = 2x cm
- Luas Persegi Panjang (L) = 40 cm²
Penyelesaian :
- Lebar Persegi Panjang (l) = .....?
Penyelesaian :
- Nilai x :
L = p × l
40 cm² = 5x cm × 2x cm
40 cm² = 10x² cm²
40 = 10x²
x² = 40/10
x² = 4
x = √4
x = 2
- Lebar Persegi Panjang (l) :
l = 2x cm
l = 2(2) cm
l = 4 cm
Maaf Kalau Salah