Răspuns:
29.
Aria = (baza • h)/2
a) A = 12
c) A = 9rad2
31.
12 = BC•4/2
BC = 6
32.
Aria tr. dr. = (cateta1 • cateta2)/2 = 30
33.
T.Pit.
cateta^2 = 37^2 - 12^2 = (37 - 12)(37 + 12) = 25•49 => cateta = 5•7 = 35
Aria = 210
35.
a) Aria = 50
b) Aria = 625/2 = 312,5
