Odpowiedzi

2011-03-14T22:02:43+01:00

V = 4/3 πr³

S = 4πr²

 

4/3 πr³ = π/6  |*6

8πr³ = π |:π

8r³ = 1 |: 8

r³ = ⅛

r = ½

 

S = 4*π*(½)² =  4π*¼ = π (cm²)