Réponse :
Good morning, I do'nt understand your language but Ithink you have to calculate the perimeter of the figure, havent you?
Explications étape par étape
BD²=CD²-CB²=25²-15²=400 so BD=20
EB=AB+V(BD²-AE²)=14+V(20²-16²)=14+12=26
Perimeter=14+15+25+26+16=.......
