Odpowiedzi

2009-10-26T23:32:05+01:00
R = ½a

V = πr²h = π * a²/4 * a = a³π/4

Pc = 2Pp + Pb = 2πr² + 2πrh = 2πr(r + h) = aπ(3/2a) = 3/2a²π
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