formula conversion for ceclius to farhenait?

i need that formula and also i need to convert cm-->inches

thnks

Code:

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Function toC(F as double) as double
  toC = (5/9)*(F-32)
end Function
Function toF(C as double) as double
    toF = ((9/5)*C)+32
End function

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inches = 2.54 * centimeters