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2014-05-27T00:50:33+03:00
A=4πR²

4πR²=144π
4R²=144
R²=36
R=6

V=4πR³/3=  4*6³π/3= 4*216π/3=  4*72π=  288π
2 5 2
2014-05-27T07:32:57+03:00
V sfera = 4πr³/3.......
arie sfera =4πr²
4πr²=144π
4r²=144
r²=36
r=√36
r=6
volumul=4πr³/3
=4xπx6³/3
=864 π/3