Question

Calculati lungimea cercului cu diametrul de 1
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П cm

Answer 1

$d= \frac{1}{ \pi } \\ L_o=2 \pi R \\ R=d:2 \\ R= \frac{1}{ \pi } :2 \\ R= \frac{0,5}{ \pi } \\ L_o=2 \pi \frac{0,5}{ \pi } \\ L_o= \frac{1}{ \pi } \pi \\ \boxed{L_o= \frac{ \pi }{ \pi } =\boxed{1}}$