~Jawab~
• Mencari panjang CD :
6/CD = 10/15
CD = 6/10 × 15
CD = 9 cm
• Mencari panjang AB :
AB = AG + CD
AB = 12 + 9
AB = 21 cm
• Mencari tinggi trapesium :
t = √(15² - 9²)
t = √(225 - 81)
t = √144
t = 12 cm
• Luas trapesium ABCD :
L = ½ × (AB + CD) × t
L= ½ × (21 + 9) × 12
L = 6 . 30
L = 180 cm²
Semoga Bermanfaat!
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~Jawab~
Kesebangunan
• Mencari panjang CD :
6/CD = 10/15
CD = 6/10 × 15
CD = 9 cm
• Mencari panjang AB :
AB = AG + CD
AB = 12 + 9
AB = 21 cm
• Mencari tinggi trapesium :
t = √(15² - 9²)
t = √(225 - 81)
t = √144
t = 12 cm
• Luas trapesium ABCD :
L = ½ × (AB + CD) × t
L= ½ × (21 + 9) × 12
L = 6 . 30
L = 180 cm²
Semoga Bermanfaat!