Question

Stiind ca aria unui trapez este de 82 cm² iar b=20 cm si B=21 cm,aflati lungimea inaltimii trapezului

Answer 1

Aria unui trapez respecta formula : (B+b) x h/2
=>82=(21+20)xh/2
    82=41xh/2 =>h/2=82:41 =>h/2=2 =>h=4 cm

Answer 2

h = 82cm² : (41/2)cm = 82cm² : 20,5cm = 4 cm ;