Perhatikan gambar layang layang di bawah ini. Diket: Panjang AD = 15cm, AO =9cm, DC = 20cm. Hitung luas ABCD
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Jawab:
Luas = 1/2 x (diagonal 1 x diagonal 2)
Diagonal 1 = AD = 15 cm
Diagonal 2 = AC = AO + OC = AO + DC = 9 cm + 20 cm = 29 cm
Maka,
Luas = 1/2 x (15 cm x 29 cm) = 217.5 cm²
Jadi, luas layang-layang ABCD adalah 217.5 cm².
Penjelasan dengan langkah-langkah: