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Vk - objętość kuli
Vs=a³
Vk=4/3πr³
P=4πr²
r=½a√3
1728=a³
a=12 cm
r=½*12√3
r=6√3 cm
Vk=4/3π*(6√3)³
Vk=4/3π*216*3√3
Vk=864π√3 cm³
P=4π*(6√3)²
P=4π*36*3
P=432π cm²