r uchun yechish
r=6\left(\sqrt{3}-1\right)\approx 4,392304845
Baham ko'rish
Klipbordga nusxa olish
\left(1+\sqrt{3}\right)r=12
r'ga ega bo'lgan barcha shartlarni birlashtirish.
\left(\sqrt{3}+1\right)r=12
Tenglama standart shaklda.
\frac{\left(\sqrt{3}+1\right)r}{\sqrt{3}+1}=\frac{12}{\sqrt{3}+1}
Ikki tarafini 1+\sqrt{3} ga bo‘ling.
r=\frac{12}{\sqrt{3}+1}
1+\sqrt{3} ga bo'lish 1+\sqrt{3} ga ko'paytirishni bekor qiladi.
r=6\sqrt{3}-6
12 ni 1+\sqrt{3} ga bo'lish.
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