Question

Calculati perimetrul unui dreptunghi ce are dimensiunile egale cu
a)L=15dm, l=6dm
b)L=20m, l=30dm
c)L=2hm, l15dam
d)L=3,5dm, l=1,8dm

Answer 1

a) P = AB +BC+CD+DA
P= 6+15+6+15= 42 dm
42 dm = 4,2 m

b) P = AB +BC+CD+DA
P= 3 +20 +3 +20= 46m
30dm = 3m

c) P = AB +BC+CD+DA
15 dam = 150 m
2hm =200m
P= 150 + 200 + 150 + 200= 700 m

d) P = AB +BC+CD+DA
P = 3,5 dm + 1,8 dm + 3,5 dm + 1,8 dm= 7,0 + 3,6 =10,6
10,6 dm = 1,06 m