Luas bangun gabungan (persegi panjang dan segitiga)
• Persegi panjang
L1 = p × l
= 20 × 5
= 100 cm²
• Segitiga
Alas segitiga belum diketahui
a = √c² - b²
= √13² - 5²
= √169 - 25
= √144
= 12 cm
L2 = ½ × a × t
= ½ × 12 × 5
= ½ × 60
= 30 cm²
Luas gabungan :
= L1 + L2
= 100 + 30
= 130 cm³ (A)
Semoga membantu (●'▽'●)ゝ
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Luas bangun gabungan (persegi panjang dan segitiga)
• Persegi panjang
L1 = p × l
= 20 × 5
= 100 cm²
• Segitiga
Alas segitiga belum diketahui
a = √c² - b²
= √13² - 5²
= √169 - 25
= √144
= 12 cm
L2 = ½ × a × t
= ½ × 12 × 5
= ½ × 60
= 30 cm²
Luas gabungan :
= L1 + L2
= 100 + 30
= 130 cm³ (A)
Semoga membantu (●'▽'●)ゝ