Sprendimas: UURnKu - 1

a =
2* R* sin(

180

/ n

)

a = 2* R* sin(

180

/ n

) $a$ = $2\cdot R\cdot sin(\frac{180}{n})$

a = 8* R* cos(

45

/ n

)* cos(

90

/ n

)* sin(

45

/ n

) $a$ = $8\cdot R\cdot cos(\frac{45}{n})\cdot cos(\frac{90}{n})\cdot sin(\frac{45}{n})$