In a case whereby The total capacitance (C) is directly proportional to the product of the dielectric constant (k) and the plate area (A) and inversely proportional to the thickness (d) of the dielectric the expression is

What is the expression?
Given that;
Total capacitance (C) is directly proportional to the product of the dielectric constant (k) and the plate area (A)
C=kA
Inversely proportional to the thickness (d) of the dielectric
