Question

Tolong bantuin ya soal di bawah ini

Answer 1

#Asumsi Kotak tengah Persegi

diket :
l = 5 cm
p = 16 cm
s = 4 cm
L = 2l + 4
~ = 14 cm

ditanya : Lb..?
jawab :

#Cara 1

Lb = Lb1 + Lb2 + Lb3
Lb = (p×l) + (s×s) + (p×l)
Lb = 2(p×l) + (s×s)
Lb = 2(16×5) + (4×4)
Lb = 2(80) + 16
Lb = 160 + 16
Lb = 176 cm^2

#Cara 2

Lb = P × L - 2(p' × l')
Lb = (16) × (5+4+5) - 2([16-4]/2 × 4)
Lb = 16 × 14 - 2(6 × 4)
Lb = 224 - 48
Lb = 176 cm^2

Answer 2

Luas Persegi Panjang : ↓
L = p × l
L = 16 × 5
L = 80 Cm²

Luas Persegi : ↓
L = S × S
L = 4 × 4
L = 16 Cm²

Luas Persegi Panjang : ↓
L = p × l
L = 16 × 5
L = 80 Cm²

Jumlah Luas : ↓
L = 80 Cm² + 16 Cm² + 80 Cm²
L = 176 Cm²