Question

Aflati aria si inaltimea unui triunghi echilateral daca perimetrul sau este 48 cm

Answer 1

$P=3l=\textgreater l=\frac{P}{3}=\frac{48}{3}=16cm$

$A=\frac{\sqrt3}{2}*l^2=128\sqrt3cm^2$

$h=\frac{\sqrt3}{2}h=8\sqrt3cm$