Расчет: V8ZwjG - 1

C  = 
 
 4* π* ε* ε0* R1* R2
/ (R2-R1)
C =  
 4* π* ε* ε0* R1* R2
/ (R2-R1)
$$C$$ = $$\frac{4\cdot \pi\cdot \varepsilon\cdot \varepsilon0\cdot R1\cdot R2}{R2-R1}$$
C =  
 4* R1* R2* ε* ε0* π
/ (R2-R1)
$$C$$ = $$\frac{4\cdot R1\cdot R2\cdot \varepsilon\cdot \varepsilon0\cdot \pi}{R2-R1}$$