Daca marim latimea unui dreptunghi cu 4cm obtinem un alt dreptunghi cu 2 laturi alaturate egale si cu perimetrul de 48 cm. Calculati perimetrul si aria dreptunghiului dat

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28 Agustus 2025 matematica 5 minute
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Clasă: Education Materie: matematica
Daca marim latimea unui dreptunghi cu 4cm obtinem un alt dreptunghi cu 2 laturi alaturate egale si cu perimetrul de 48 cm. Calculati perimetrul si aria dreptunghiului dat
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(361)
Notam cu:

l=latimea dreptunghiului
L=lungimea dreptunghiului/latura patratului

Un dreptunghi cu 2 laturi alaturate congruente este un patrat.

l+4cm=L

Intr-un patrat, perimetrul este egal cu 4 ori latura.

P=48cm

4L=48cm
L=48cm:4
L=12cm

l=L-4cm
l=12cm-4cm
l=8cm
Răspunsul a fost dat în data 28 Agustus 2025

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