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Jawab :
10. Diagonal ruang
= a√3
= 12√3 cm
Jawaban : B
11. √6² + 6²
= √36 + 36
= √72 = 6√2
Luas bangun yang diarsir
= 6√2 x 6
= 36√2 cm²
Jawaban : D
12. Panjang AC
= √12² + 9²
= √144 + 81
= √225
= 15 cm
Jawaban : C
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