Question

Aflati aria unui patrat cu perimetrul egal cu 14 cm

Answer 1

P patrat=14cm;
⇒P patrat=4l
⇒4l=14cm
⇒l=3,5cm[latura patratului];
⇒A patrat=l²
⇒A patrat=3,5cm·3,5cm
⇒A patrat=12,25cm²[aria unui patrat];

Answer 2

P = 14 cm
4L = 14 cm| :4
L = 3,5 cm
A = L²
A = (3,5)²
A = 12,25 cm²