Question

un cerc cu lungimea 12pi cm are aria egala cu???

Answer 1

[tex] \pi ori x^{2} \\ 2 sau pi ori raza la putrea a doua totul supra 2 [/tex]

Answer 2

$L=2 \pi R=>R= \frac{L}{2 \pi } = \frac{12 \pi }{2 \pi } =6(cm).$
$A= \pi R^{2} =36 \pi ( cm^{2} ).$