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Potongan kayu berbentuk segitiga siku-siku panjang alasnya 30 cm dan tinggi 45 cm luas permukaan potongan kayu tersebut adalah...

Rani Maharani

Soal

Pembahasan

Jawaban:

Potongan kayu tersebut berbentuk segitiga siku-siku dengan alas 30 cm dan tinggi 45 cm. Luas permukaan potongan kayu tersebut dapat dicari dengan rumus luas segitiga siku-siku, yaitu 1/2 x alas x tinggi. Sehingga, luas permukaan potongan kayu tersebut adalah:

1/2 x 30 cm x 45 cm = 675 cm²

Jadi, jawaban yang benar adalah A. 675 cm².

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