Răspuns :
Lungimea=3•latimea
Lungimea=3•3=9
=> perimetrul= 2lungime+2latime
=2•9+2•3
=18+6
=24 cm
Lungimea=3•3=9
=> perimetrul= 2lungime+2latime
=2•9+2•3
=18+6
=24 cm
l = 3 cm
L = l * 3 = 3 * 3 = 9 cm
Pabcd= 2 * ( L + l ) =
= 2 * ( 9 + 3 ) =
= 2 * 12 =
= 24
L = l * 3 = 3 * 3 = 9 cm
Pabcd= 2 * ( L + l ) =
= 2 * ( 9 + 3 ) =
= 2 * 12 =
= 24