1. Dik : p = 150 cm ; l = 75 cm
Dit : K = ?
Jwb : K = 2 × (p + l)
K = 2 × (150+75)
K = 2 × 225
K = 450 cm
2. Dik : K = 210 m ; l = 35 m
Dit : L = ?
Jwb :
— Cari dulu panjangnya,
p = (K ÷ 2) - l
p = (210 ÷ 2) - 35
p = 105 - 35
p = 70 cm
— Luas,
L = p × l
L = 70 × 35
L = 2450 cm²
3. Dik : a = 6 cm ; L = 240 cm²
Dit : t = ?
240 = ½ (6) × t
240 = 3 × t
t = 240 / 3
t = 80 cm
4. Dik : s = 30 cm
Jwb : K = s + s + s
K = 30 + 30 + 30
K = 90 cm
5. Dik : L teras= 18 m² = 180.000cm²
L keramik = 25 × 20 = 500cm²
Dit : banyak ubin = ?
Jwb : 180.000 : 500 = 360 ubin
semoga terbantu✨
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1. Dik : p = 150 cm ; l = 75 cm
Dit : K = ?
Jwb : K = 2 × (p + l)
K = 2 × (150+75)
K = 2 × 225
K = 450 cm
2. Dik : K = 210 m ; l = 35 m
Dit : L = ?
Jwb :
— Cari dulu panjangnya,
p = (K ÷ 2) - l
p = (210 ÷ 2) - 35
p = 105 - 35
p = 70 cm
— Luas,
L = p × l
L = 70 × 35
L = 2450 cm²
3. Dik : a = 6 cm ; L = 240 cm²
Dit : t = ?
Jwb :
240 = ½ (6) × t
240 = 3 × t
t = 240 / 3
t = 80 cm
4. Dik : s = 30 cm
Dit : K = ?
Jwb : K = s + s + s
K = 30 + 30 + 30
K = 90 cm
5. Dik : L teras= 18 m² = 180.000cm²
L keramik = 25 × 20 = 500cm²
Dit : banyak ubin = ?
Jwb : 180.000 : 500 = 360 ubin
semoga terbantu✨