Question

Aflaţi perimetrul poligonului cu laturile de lungime: a)3cm;4,2cm;5,8cm;6cm;.
b)2pe3cm;4pe3cm;1cm;1,5cm;
Varog mult numai corect.

Answer 1

P=suma tuturor laturilor

a) 3+4,2+5,8+6=
=7,2+5,8+6=
=13+6=
=19

$b)~\dfrac{2}{3}+\dfrac{4}{3}+1+1,5=$
$=\dfrac{6}{3}+2,5=~{simplifici~6~si~3~cu~3$
$=2+2,5=$
$=\fbox{4,5}$