Question

Calculati perimetrul unui triunghi stiind ca intre lungimile a,b,c a laturilor sale au loc relatiile: 2×a=3×b=5×c si b-c= 4cm

Answer 1

Explicație pas cu pas:

2a=3b=5c=k

b-c=4⇒k/3-k/5=4⇒5k-3k=60⇒k=30

a=k/2⇒a=30/2⇒a=15(cm);

b=k/3⇒b=30/3⇒b=10(cm);

c=k/5⇒c=30/5⇒c=6(cm);

P=a+b+c;

P=15+10+6=31(cm).

Bafta!