Question

Va rog rezolvare completa, dau coroana ​

Answer 1

Interesanta problema:)) Ai respectele mele. Nu am mai văzut geometrie in spatiu de mult pe platforma;))

Answer 2

Salut!

$a.$

$teorema \: catetei$

$ao = r3 = \frac{l \sqrt{3} }{3}$

$ad = h3 = \frac{ l \sqrt{3} }{2}$

$288 = \frac{l \sqrt{3} }{3} \times \frac{l \sqrt{3} }{2}$

$288 = \frac{(l \sqrt{3})^{2} }{6}$

$1728 = {3 \times l}^{2}$

$576 = {l}^{2} - > l = 24 \: cm$

$b.$

$vd < (vbc)$

$va \: \: \: vb$

$- > va \: (vbc)$

$c.$

$df - > paralela$

$f - > mijlocul \: mb$

$cm = h3 = \frac{l \sqrt{3} }{2} = \frac{24 \sqrt{3} }{2} = \sqrt[12]{3} \: cm$

$f - > \: mijloc \: mb$

$d - > \: mijloc \: bc$

$deci \: . \: \: d(d.(vab) = df = 6 \sqrt{3} \: cm \:$

Succes!