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perimetru patratului =15/4,calculati aria

Răspuns :


[tex]\it \mathcal{P} =4\cdot\ell=\dfrac{15}{4} \Rightarrow \ell=\dfrac{15}{4}:4=\dfrac{15}{4}:\dfrac{4}{1}=\dfrac{15}{4}\cdot\dfrac{1}{4} =\dfrac{15}{16}\ cm \\\;\\ \\\;\\ \mathcal{A} = \ell^2 =\left(\dfrac{15}{16}\right)^2 =\dfrac{225}{256} \ cm^2[/tex]