Răspuns:
50 cm²
Explicație pas cu pas:
BP ≡ PC =>
Aria(APC) = ½•Aria(ABC) = ½•240 = 120 cm²
AG ≡ GC =>
Aria(PGC) = ½•Aria(APC) = ½•120 = 60 cm²
PE = ⅔•PC =>
Aria(GPE) = ⅔•Aria(PGC) = ⅔•60 = 40 cm²
Aria(GEC) = 20 cm²
GH ≡ HC =>
Aria(GHE) = ½•Aria(GEC) = ½•20 = 10 cm²
=>
Aria(GHEP) = Aria(GPE) + Aria(GHE) = 40 + 10 = 50 cm²