kenyambenton kenyambenton
  • 23-04-2014
  • Mathematics
Answered

If BC = 4 and CD = 27, find AC.

If BC 4 and CD 27 find AC class=

Answer :

Аноним Аноним
  • 30-04-2014
[tex]\Delta ABC\sim\Delta DAC\\\\then\\\\\frac{|AC|}{|BC|}=\frac{|CD|}{|AC|}\\\\|AC|^2=|BC|\cdot|CD|\\\\|AC|^2=4\cdot27\\\\|AC|=\sqrt{4\cdot27}\\\\|AC|=\sqrt4\cdot\sqrt{27}\\\\|AC|=2\cdot\sqrt{9\cdot3}\\\\|AC|=2\sqrt9\cdot\sqrt3\\\\|AC|=2\cdot3\sqrt3\\\\|AC|=6\sqrt3[/tex]
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kianacarr057
kianacarr057 kianacarr057
  • 25-07-2022

31 is the answer I think..

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