Sprendimas: nRnnjN - 1
S =
2* π
* r* (r+h)
2* π
* r* (r+h)|
|
S = 2* π* r* (r+h)$$S$$ = $$2\cdot \pi\cdot r\cdot (r+h)$$
* r* (r+h)$$S$$ = $$2\cdot \pi\cdot r\cdot (r+h)$$S = 2* r^2* π+ 2* h* r* π$$S$$ = $$2\cdot r^{2}\cdot \pi+2\cdot h\cdot r\cdot \pi$$
+ 2* h* r* π$$S$$ = $$2\cdot r^{2}\cdot \pi+2\cdot h\cdot r\cdot \pi$$