oblicz objetosc kuli, ktorej pole powierzchni wynosi 64 (pi)
Pc=64π
Pc=4πr²
4πr²=64π|:4π
r²=16
r=√16
r=4
P=4πR²
P=64π
64π=4πR² /:π
64=4R² /:4
16=R²
R=√16=4
V=4/3πR³
V=4/3π*4³
V=4/3π*64
V=256/3π [j]³
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Pc=64π
Pc=4πr²
4πr²=64π|:4π
r²=16
r=√16
r=4
P=4πR²
P=64π
64π=4πR² /:π
64=4R² /:4
16=R²
R=√16=4
V=4/3πR³
V=4/3π*4³
V=4/3π*64
V=256/3π [j]³