V=\frac{4}{3}\pi R^3
\frac{4}{3}\pi R^3=\frac{9}{16}\pi/:\pi
\frac{4R^3}{3}=\frac{9}{16}
4R^3*16=9*3
64R^3=27
R^3=\frac{27}{64}
R=\sqrt[3]{\frac{27}{64}}
R=\frac{3}{4}
P=4\pi R^2
P=4\pi*(\frac{3}{4})^2=4\pi*\frac{9}{16}=\frac{9}{4}\pi=2,25\pi <-- odpowiedź