Znáš poloměr kružnice \( k \), jak velký bude průměr kružnice?
\( \large r = 1cm \)
\( \large d = 1.5 \cdot r = 1.5 \cdot 1 = 1.5cm \)
\( \large d = 2 \cdot r = 2 \cdot 1 = 2cm \)
\( \large d = 4 \cdot r = 4 \cdot 1 = 4cm \)
\( \large d = 3 \cdot r = 3 \cdot 1 = 3cm \)