Arie_patrat=latura*latura=latura²
25=latura²
=>latura=√25
=>latura=5 cm
Arie_dreptunghi=lungime*latime
lungime=6 cm
latime=[tex] \frac{1}{2} [/tex]*6=[tex] \frac{6}{2} [/tex]=3 cm
=> Arie_dreptunghi=6*3=18 cm²
Arie_triunghi=(baza*inaltimea)/2
baza=6 cm
inaltimea=5 cm
=> Arie_triunghi=(6*5)/2=30/2=15 cm²
Arie_trapez=[(baza mare+baza mica)*inaltime]/2
baza mare=10 cm
baza mica=6 cm
inaltimea=5 cm
=> Arie_trapez=[(10+6)*5]/2=(16*5)/2=8*5=40 cm²
