potato3999
22.06.2019 •
Mathematics
In circle o, ac and bc are diameters. the measure of arc dc is 50 what is the measure of ebc
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Ответ:
L=80+w
2(80+w)+2w=400
160+2w+2w=400
160+4w=400
4w=240
w=60
L=80+60
L=140
So, the length is 140 and the width is 60