Question

Va rog repede!!!!!,!E urgent!!!!!!

Answer 1

Pai daca
<B=<C => triunghiul ABC isoscel=> AB=AC

a) P abc= AB+BC+AC
30cm= 2×AB+AC
30cm= 2× 12cm+AC
30cm= 24cm+AC
AC= 30cm-24cm
AC= 6cm

b) P abc= AB+BC+ AC
30cm= 2×Ac+ BC
30cm= 2×14cm+ BC
BC= 30cm- 28cm
BC= 2cm

c) P abc= AB+ BC+ AC
30cm= 2× AB + BC
30cm= 2×AB+ 13cm
2×AB= 30cm-13cm
2×AB= 17cm
AB= 17cm:2
AB=AC= 8,5 cm

d)P abc= AB+ AC+BC
30cm= 2×AC+ 11cm
2×AC= 30cm-11cm
2×AC= 19cm
AC = 19cm÷2
AC=AB=9.5cm

Sper ca te.am ajutat!!