Jawaban:
a. DE = 1/√2 × DF
= 1/√2 × 15√2
= 15 cm
b. Luas = s²
= 15² = 225 cm²
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Jawaban:
a. DE = 1/√2 × DF
= 1/√2 × 15√2
= 15 cm
b. Luas = s²
= 15² = 225 cm²