Question

calculati latimea unui dreptunghi care are perimetrul de 40 cm si latimea de:
a)5 cm
b)6 cm
c)7,5
URGENT!

Answer 1

P=2(l+L)=40
l+L=20
L=20-l

a) l=5
L=20-5=15

b)l=6
L=20-6=14

c)l=7,5
L=20-7,5=12,5