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✨ Best Answer ✨

30×0.20 -30√2×0.4 +20×0.6
=6-12√2+12
=18-12√2 
√2=1.41としてより、
=18-12×1.41
=18-16.92
=1.08
≒1.1N・m

にんじん

ありがとうございます!!!

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