Sprendimas: vo7sIX - 1

S =

3* saknis(

3)* R^²

/ 4

S =

3* saknis(

3)* R^²

/ 4

$S$ = $\frac{3\cdot \sqrt {3}\cdot R^{2}}{4}$

S =

3* R^²* saknis(

3)

/ 4

$S$ = $\frac{3\cdot R^{2}\cdot \sqrt {3}}{4}$

S =

3* R^²* 1.73205

/ 4

$S$ = $\frac{3\cdot R^{2}\cdot 1.73205}{4}$

S =

5.19615* R^²

/ 4

$S$ = $\frac{5.19615\cdot R^{2}}{4}$

S = 1.29904* R^² $S$ = $1.29904\cdot R^{2}$