Answer:
8[tex]\sqrt{3}[/tex] meters
Step-by-step explanation:
Since all cross-sections of a sphere are circles.
so, [tex]r^{2}[/tex] = 4*(16 - 4) =48
where, r= radius of the circular water surface
r =[tex]\sqrt{48}[/tex] = 4[tex]\sqrt{3}[/tex] meters .
Hence,
diameter= 2r = 2* ( 4[tex]\sqrt{3}[/tex])
diameter = 8[tex]\sqrt{3}[/tex] meters.
