Pc=12π j²
wzor na P=4πr²
12π=4πr² /:4π
r²=3
r=√3
objetosc kuli V=4/3πr³ =4/3π·(√3)³=4/3π·3√3 =(12√3)π/3 =4√3 π j³
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Pc=12π j²
wzor na P=4πr²
12π=4πr² /:4π
r²=3
r=√3
objetosc kuli V=4/3πr³ =4/3π·(√3)³=4/3π·3√3 =(12√3)π/3 =4√3 π j³