Question

calculaţi perimetrul unui dreptunghi ce are dimensiunile(lungimea si latimea)egala cu:
a)L=15dm, l=6dm
b)L=20m, l=30dm
c)L=2hm, l=15dam
d)L=3,5dm, l= 1,8dm

Answer 1

a)2*15dm+2*6dm=30+12=42 dm
b)2*20m+2*0,3m=40+0,6=40,6 m
c)2*20dam+2*15dam=40+30=70dam
d)2*3,5dm+2*1,8dm=7+3,6=10,6dm