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  • 15-02-2021
  • Mathematics
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Аноним Аноним
  • 15-02-2021

Step-by-step explanation:

in traingle ABD

SIN45=AD/AB

1/√2=7/AB

AB=7√2

PERIMETER=SUM OF ALL SIDE=2(AB+AD)=2(7√2+=14√2+14

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