the volume of parallel piped of coterminus edges 3i-j+4k, 6i+2j-5k and 2i+j-3k is
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Volume=
∣
∣
∣
∣
∣
∣
∣
∣
2
1
3
−3
2
−1
4
−1
2
∣
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∣
=2(4−1)+3(2+3)+4(−1−6)
=6+15−28=∣−7∣=7
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