Помогите пожалуйста!!!!!!!срочно. Created by 5572615. matematika-ru

Помогите пожалуйста!!!!!!!срочно...

August 2022 1 6 Report

Помогите пожалуйста!!!!!!!срочно

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армения20171 5)AB=10;AC=6
AC²=AD*AB
6²=AD*10
AD=36/10=3,6
∆ADC по теорема Пифагора
СД²=6²-3,6²=36-12,96=23,04
СД=4,8
6)S(ABCD)=?
6²=x*9;AC=x+9
x=36:9=4
AC=4+9=13
S(ABCD)=(13*6/2)*2=13*6=78

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