How do atoms become ions explain which characteristics change in which stay the same during this transformation

we know that

the height of cylinder is equal to the diameter of sphere

so

h=2*r> equation 1

volume of cylinder=pi*r²*h

volume=8 m³

substitute equation 1 in the formula of volume

8=pi*r²*(2*r)> 8=2*pi*r³>  equation 2

find the volume of a sphere

volume sphere=(4/3)*pi*r³> (2/3)*[2*pi*r³]

substitute the equation 2 in the formula of volume

volume sphere=(2/3)*[8]> 16/3 m³

the answer is

Yolanda should have found the volume by multiplying 8 by 2/3.