Question 1090131
The drop of oil has a volume of
{{{V[d]=(4/3)pi(10^3)}}}
The radius of the oil film needs to be convert to mm for consistency.
10cm=100mm
The cylindrical film has a volume of,
{{{V[cf]=pi*(100)^2*h}}}
Set the two equal to each other,
{{{V[d]=V[cf]}}}
{{{(4/3)pi(10^3)=pi*(100)^2*h}}}
{{{h=(4/3)((10^3)/(100^2))}}}
Work that out for the height in mm.