Розрахунок: 7zUvCP - 1
S =
4* π
* R^2
4* π
* R^2|
|
S = 4* π* R^2$$S$$ = $$4\cdot \pi\cdot R^{2}$$
* R^2$$S$$ = $$4\cdot \pi\cdot R^{2}$$S = 4* R^2* π$$S$$ = $$4\cdot R^{2}\cdot \pi$$
$$S$$ = $$4\cdot R^{2}\cdot \pi$$* R^2|
|
* R^2$$S$$ = $$4\cdot \pi\cdot R^{2}$$$$S$$ = $$4\cdot R^{2}\cdot \pi$$