Obliczenie: PC1PoC - 1

S =

n* a* r

/ 2

S =

n* a* r

/ 2

$$S$$ = $$\frac{n\cdot a\cdot r}{2}$$

n* a* r

/ 2

= S$$\frac{n\cdot a\cdot r}{2}$$ = $$S$$

n* a* r = 2* S$$n\cdot a\cdot r$$ = $$2\cdot S$$

n =

2* S

/ a/ r

$$n$$ = $$\frac{2\cdot S}{a\cdot r}$$