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daca BD=16 cm , AB = 28 si EC = 9 cm , calculati AD,BE SI BC


Răspuns :

BD=16cm
AB=28cm
EC=9cm

AD=AB-DB => AD=28-16=> AD=12 cm
[tex] \frac{AD}{AB} [/tex] = [tex] \frac{BE}{EC} [/tex] = [tex] \frac{12}{28} [/tex] = [tex] \frac{BE}{9} [/tex] = 12×9/ 28=> 108/28=3,8 cm. Coronita? :3 :*