input: from typing import List
  
  def find_total_surfacearea(length: float, breadth: float, height: float) -> float:
      """
      Calculate and return the total surface area of a cuboid given its three dimensions.
  
      >>> find_total_surfacearea(2, 3, 4)
      52
      >>> find_total_surfacearea(1, 1, 1)
      6
      """
      return (2*(length*breadth + breadth*height + height*length))
output:     return (2*(length*breadth + breadth*height + height*length))