Răspuns :
Salut! :)
A ABC = ( BE × AC )/2
65 cm² = ( BE × 13 cm )/2
BE × 13 cm = 65 cm² × 2
BE × 13 cm = 130 cm²
BE = 130 cm²/13 cm = 10 cm
Salut! :)
A ABC = ( BE × AC )/2
65 cm² = ( BE × 13 cm )/2
BE × 13 cm = 65 cm² × 2
BE × 13 cm = 130 cm²
BE = 130 cm²/13 cm = 10 cm