Question

AFLATI PERIMETRUL UNUI DREPTUNGHI CU LUNGIMEA SI LATIMEA DE:
a) 6 cm si 2 cm
b)8 dm si 5 dm
c)15 m si 9 m

Answer 1

P=2(L+l)

p=2(6+2)

p=2*8

p=16

p=2(8+5)

p=2*13

=26

p=2(15+9)

p=2*24

p=48

Answer 2

a) P=2x6+2x2= 12+4=16 cm 
B) P=2x8+2x5=16x10=26dm 
c) P=2x15+2x9=30+18=48m 
P=2xL+ 2xl