A person by the name of Huebscher developed a relationship between the equivalent size of round ducts and rectangular ducts according to; D=...

I need help with this problem.A person by the name of Huebscher developed a relationship between the equivalent size of round ducts and rectangular ducts according to;D= 1.3((ab)^.0625)/(a+b)^.0625.where D = diameter of circular duct (mm), a = dimension of the rectangular duct(mm) and b= the other dimension of the rectangular duct(mm)Using excel, create a table that shows the relationship between the circular and the rectangular duct