Aylaning markazidan chekkasigacha bo'lgan masofa uning ** radiusi * (* r *) deb nomlanadi va bu aylana bilan bog'liq (* c *) formula bilan `c = 2πr`. Bizda `3 = 2πr` va biz `r` uchun yechim topmoqchimiz. Asosiy algebra bizga `3/(2π) = r => r = 3/(2π) => r = 1.5/π = r ~ = 0.477` Shunday qilib, masofa **1.5/π sm yoki ~ 0.477 sm **.
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