Question

Se considera un dreptunghi de lungime L si latime l care are perimetrul egal cu 72 cm.Calculati: a) L, daca l =16 cm. b) l, dacaL=25 cm. c) L, daca l =10 cm

Answer 1

a) 2*(L+l)=72 2*(L+16)=72 2L+32=72 2L=72-32 2L=40 impartim la 2 L= 20 b) 2*(25+l)=72 50+2l=72 2l=72-50 2l=22 impartim la 2 l=11 c) 2*(L+10)=72 2L+20=72 2L=72-20 2L=52 impartim la 2 L=26