Розрахунок: 5DsJE0 - 1

S =
π

* R* ( 2* h+r)

S = π

* R* ( 2* h+r) $S$ = $\pi\cdot R\cdot (2\cdot h+r)$

S = 2* h* R* π

+ r* R* π

$S$ = $2\cdot h\cdot R\cdot \pi+r\cdot R\cdot \pi$

S = 2* R* h* π

+ R* r* π

$S$ = $2\cdot R\cdot h\cdot \pi+R\cdot r\cdot \pi$